Welcome to the DVC Library subject guide for Primary, Secondary, and Tertiary Sources. If you have any questions about this guide, please contact the reference librarian.
Primary sources include:
Secondary sources are works that interpret the primary data, such as a book about eating disorders, a journal article about the role of tobacco in the colonial economy, or a critical review of a play.
Tertiary sources are works that compile, analyze, and digest secondary sources. General and specialized encyclopedias are familiar examples of tertiary sources.