This document provides information about primary sources and how to identify primary research articles. It defines a primary source as information derived directly from formal observations, procedures or experiments using accepted scientific methods, usually published in a refereed journal. It notes that primary research articles will describe original research, include credentials and research methods, and cite references. It also lists several databases that can be used to find primary literature, such as PubMed, ScienceDirect, and Web of Science. It provides tips for searching these databases, such as limiting to journal articles or articles, to find primary research. Finally, it lists options for getting help from a librarian to find primary sources.