This document provides an overview of information sources and services. It defines reference work and the reference process. It describes the history and evolution of reference services. It also outlines different types of reference sources like encyclopedias, dictionaries, almanacs, directories, and bibliographies. It discusses other information sources such as serials, government publications, and non-print materials. Finally, it summarizes various information services provided by libraries.

1. Information Sources and
Services
By:
JEHN MARIE A.
SIMON
BLIS-2

2. C O M P I L E D T O P I C S :
Def in ition an d Histor y
R e f e r e n c e w o r k
R e f e r e n c e p r o c e s s
R e f e r e n c e i n t e r v i e w
Q u e r y s t a t e m e n t
S e a r c h s t r a t e g y
B o o l e a n s e a r c h i n g
R e f e r e n c e s o u r c e s

3. R e f e r e n c e b o o k
B a s i c r e f e r e n c e s o u r c e s
C o n t r o l A c c e s s D i r e c t i o n a l T y p e S o u r c e s
O t h e r I n f o r m a t i o n S o u r c e s
T y p e s o f i n f o r m a t i o n S e r v i c e s
I n s t r u c t i o n a l S e r v i c e s

4. Definition and History
Samuel Green’s Personal Relation between Librarians and Reader’s, 1876
 assistance to library readers in searching for information
 suggesting books
 searching and gathering information for researchers
 reaching young people how to use the library and reference sources
 making users understand the system we use in the library
Alice Bertha Kroeger (1902 and 1908)
 from “the assistance given to the readers in the use of the resources of
the library” to expanding the responsibility of the reference librarian to
include guiding readers to information and reference service as an activity
not limited to librarianship.

5. William S. Learned (1924)
 specialized “intelligence service” with each person having his or her unique
needs
James I. Wyer (1930)
 introduces the concept of interpretation and mediation aside from the aid
and direction
 reference transaction: inquirer, reference librarian, sources or materials
Gilbert Mudge and Louis Shores (1930s)
 “everything necessary to help the reader in his inquiry” (Mudge)
 “interpret books to readers” (Shores)

6. Ranganathan (1945)
 “ the process of establishing a contact between a reader and his documents
In a personal way”
ALA Reference & User Services Association (2000)
 “ information services in libraries take a variety of forms including direct
personal assistance, directories, signs, exchange of information culled from
a reference source, reader’s advisory service, dissemination of information
in anticipation of user needs or interests, and access to electronic information.”

7. REFERENCE WORK
 Term emerged in the 1890’s
 Some overlap between the concepts of “reference work”
and “reference service”
 according to Rothstein reference work is the personal
assistance given by the librarian to individual readers in
pursuit of information while reference service implies a
“definite recognition” of the responsibility for providing
reference work
Samuel Rothstein

8. REFERENCE PROCESS
 “The process of satisfying specific, recurrent
information needs” (Jahoda)
 “The process of answering questions” (Katz)

9. Message selection query words,
descriptors, modifiers
Negotiate query?
Select types of answer-providing
tool
Select specific titles to search
Jahoda’s Model of the Reference Proce

10. REFERENCE SOURCES
Categories of Information Sources (Mann, 2005)
 Primary sources- primary records generated
by a particular event, by those participated in it
 Secondary sources- later analyses and reports
written by non-participants
Level of Literature (Mann,2005)
 Primary literature- deals directly with a particular
problem or concern
 secondary literature- comprised both scholarly and
Popularizations
 Tertiary literature- consists of reference work

11. REFERENCE BOOK
 A book designed by the arrangement and treatment
of its subject matter to be consulted for the definite items
of information rather than to be read consecutively (ALA)

12. EVALUATION OF REFERECE SOURCES
FORMAT SCOPE AUTHORITY
TREATMENT
RELATION TO
SIMILAR WORKS
ARRANGEMENT
Special features Cost

13. BASIC REFERENCE
SOURCES
E n c y c l o p e
d i aAttempts to gather all the information either from all
branches of knowledge or from a single subject area,
arrange them in alphabetical order for ready reference.
Uses:
• fact-finding
• general background information
• “preresearch” information

14. Types of ENCYCLOPEDIA
Adult encyclopedia
Popular adult sets
Encyclopedia for children and young adults
Electronic and online
Subject encyclopedia
Publishers:
 Encyclopedia Britanica Education
Corp.
 World Book
 Grolier Inc.
 Macmillan Educational Corp.

15. D I C T I O N A
R Y
USES:
o define words or translate them
o verify spelling, syllabication or pronunciation
o check on usage
o determine the etymological history of a word
o standardize the language to some extent
Publishers:
 Merriam-Webster
 Oxford University Press
 Random House
 Scott-Foresman
 Doubleday
 Macmillan
 Simon & Schuster
 Houghton Mifflin

16. Types of Dictionary
UNABRIDGED DICTIONARY
Not derived or condensed
from a larger work and
attempt to include all
words in a language that
are in use
Example: WEBSTER’S
THIRD NEW
INTERNATIONAL
DICTIONARY
ABRIGED OR DESK DICTIONARY
Selective compilation
Example: WEBSTER’S
NINTH COLLEGIATE
DICTIONARY
ETHYMOLOGICAL
Gives the history of
individual words, also
called historical or
diachronic
Example: THE OXFORD
ENGLISH DICTIONARY

17. SLANG
DICTIONARY
Defines terms
used in ordinary
or informal
speech
Example:
DICTIONARY OF
AMERICAN
SLANG
DUAL LANGUAGE
OR BILINGUAL
DICTIONARY
Contains terms in
one language and
definitions in a
second language
in the first section
Example:
ITALIAN-ENGLISH
DICTIONARY
THESAURUS
Contains
synonyms and
antonyms, usually
without
definitions
Example:
ROGET’S
INTERNATIONAL
THESAURUS

18. USAGE
DICITONARY
Prescribes how
the word should
be used
ABBREVIATION
AND ACRONYM
DICTIONARY
Example:
ACRONYM,
INITIALISMS
AND
ABBREVIATIONS
DICTIONARY
SUBJECT
DICTIONARY
Example:
ALA Glossary
Harrod’s
Glossary of LIS
Terms

19. A
L
M
A
N
A
C
S
“A compendium of useful data and statistics
relating to countries, Personalities, events,
subjects, and the like” (Katz)
Examples:
 Canadian’s Almanac and Directory
 Time Almanac
 Whitaker’s Almanack
 World Almanac and Book of Facts

20. Y
E
A
R
B
O
O
K
S
“An annual compendium of the data and statistics of
a given year” (Katz)
Examples:
General works
 Facts on File World News Digest Yearbook
 Annual Register: World Events
Subject yearbooks
 The Europa World Yearbook
 The Stateman’s Yearbook’s: the Politics, Cultures and Economies
of the World

21. H A N D B O O K S A N D M A N U A L S
Ready reference guides to particular fields of knowledge as they compress
large amounts of information on that field or subject into one or a few volumes
 BOOKS OFDAYS IN FIRST
 CURIOSITIES AD WONDERS
 ETIQUETTE
 LITERATURE
 QUOTATIONS

22. DI RECTORI ES
“ A listof person’s or organizations systematicallyarranged,
usuallyin alphabeticor classed order giving address, affiliations,
etc. for individuals, and address, officers, functions, and similar
data for organizations” (ALA)
USES
 For information and referral purposes
 to locate a person, organization or
institution
 to verify the spelling
 look for descriptions/ biographic data
 compiling mailing lists
 for sampling purposes for social or
commercial surveys

23. Categories ofDirectories
 Local Directories
 GovernmentDirectories
 Institutional Directories
 Tradeand Business Directories and investment services
 Professional Directories
Examples:
 Encyclopedia of Associations
 The Foundation Directory
 The Europa World of Learning

24. B
I
O
G
R
A
P
H
I
C
S O U R C E S
TYPES
 DIRECT Contains specific facts about an individual such as
Birth/death dates, education, career, childhood,
accomplishments, works
 INDIRECT
Lists bibliographical citations leading the user to other works
which contain the biographies themselves; they may contain
entries to periodicals and books containing biographical
information

25. Categories:
• current
• retrospective
• professional andsubjectbiographies
• internationalbiographies
• pseudonym

26. G
E
O
G
R
A
P
H
I SOURCES
Primarily answers questions about location
MAPS
• graphical representation of certain boundaries of
the earth on flat surface
• Types: physical, political, route, thematic, special
purpose
GLOBE
• three- dimensional representation of earth’s
surface

27. GAZETTEERS
• geographical dictionaries
GUIDEBOOKS
• travel guide

28. CONTROL-ACCESS-DIRETIONAL TYPE SOURCES
BIBLIOGRAPHIES
a list of works whether intended to be complete or selective, compiled
on some organizing principle, such as authorship, subject, place of publication,
chronology or printer
LIBRARY CATALOG
list of holdings found in a library or group of libraries
INDEXES AND ABSTACTS
index- a tool used to locate information within a document
abstract- same as index but contains a summary of the material’s content

29. OTHER INFORMATION SOURCES
SERIALS
A publication in any medium issued in successive parts bearing numerical
or chronological designations and intended to be continued indefinitely.
Examples: periodical, magazine, journal
GOVERNMENT PUBLICATIONS
any publication originating in, or issued with the imprints of, or at
the expense and by the authority of, any office of a legally organized government
or international organizations

30. PRINTED NON-BOOK MATERIALS
 Company and Trade literature
 Technical reports
 Standards
 Specifications
 Patents
 Trademark
 Dissertations and Thesis
TYPES OF INFORMATION SERVICES
• INTERLIBRARY LOAN AND
DOCUMENT DELIVERY
• CURRENT AWARENESS SERVICE
• SELECTIVE DISSEMINATION OF
INFORMATION
• INFORMATION AND REFERRAL
SERVICES
• INFORMATION BROKERING
• TECHNICAL INQUIRY SERVICE
• RESEARCH ASSISTANCE AND
CONSULTING
• TERM-PAPER COUNSELING
• BIBLIOTHERAPY
• READER’S ADVISORY SERVICE

31. INSTRUCTIONAL SERVICES
LIBRARY ORIENTATION
- designed to welcome and introduce new and potential users
to the library’s services.
LIBRARY INSTRUCTION
- service provided by the library which trains users how to use
the tools and resources within its environs
BIBLIOGRAPHIC INSTRUCTIONS
- teaches learners how to locate and use information beyond
the physical boundaries of the library
INFORMATION LITERACY
- the information literate person is one who is able to
recognize when information is needed, have the ability to clocate.