3. 1. PUNCTUATION
Spacing After Punctuation Marks
Period
Comma
Semicolon
Colon
Dash
Quotation Marks
Double or Single Quotation Marks
Parentheses
Brackets
Slash
4. 2. SPELLING
Preferred Spelling
Spelling should conform to standard American English
as exemplified in Merriam Webster's Collegiate Dictionary
(2005). If a word is not in Webster's Collegiate, consult the
more comprehensive Webster's Third New International Dictionary
(2002).
Hyphenation
Compound words take many forms; that is, two words may
be written as
(a) two separate words
(b) a hyphenated word
(c) one unbroken, "solid" word.
For example, is follow up, follow-up, or followup
5. 3. CAPITALIZATION
Words Beginning a Sentence
Major Words in Titles and Headings
Proper Nouns and Trade Names
Nouns Followed by Numerals or Letters
Titles of Tests
Names of Conditions or Groups in an Experiment
Names of Factors, Variables, and Effects
7. 5. ABBREVIATIONS
Use of Abbreviations
Explanation of Abbreviations
Abbreviations Accepted as Words
Abbreviations Used Often in APA Journals
Latin Abbreviations
Scientific Abbreviations
Other Abbreviations
Plurals of Abbreviations
Abbreviations Beginning a Sentence
8. 6. NUMBERS
Numbers Expressed in Numerals
Numbers Expressed in Words
Combining Numerals and Words to Express Numbers
Ordinal Numbers
Decimal Fractions
Roman Numerals
Commas in Numbers
Plurals of Numbers
10. 8. STATISTICALAND MATHEMATICAL COPY
Selecting Effective Presentation
References for Statistics
Formulas
Statistics in Text
Statistical Symbols
Spacing, Alignment, and Punctuation
11. 9. EQUATIONS
Equations in Text
Displayed Equations
Preparing Statistical and Mathematical Copy
12. Chapter 4 includes guidelines for
reporting inferential statistics and a
significantly revised table of statistical
abbreviations. A new discussion of using
supplemental files containing lengthy
data sets and other media is also
included.