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A primary source is an original document or object created during the time period being studied. Examples: a diary entry, interview, photograph, dataset. For more information, check out our guide on How to Find Primary Sources.
Occasionally the phrase "primary source(s)" is used incorrectly to refer to "outside source(s)". Check with your instructor if you are unsure of what you need.
A secondary source provides interpretation, analysis, or commentary on evidence. Examples: most books on a topic, scholarly articles, dissertations, essays, etc. For more information, see Secondary Sources.
To see more definitions of library terms, see Library Terms to Know.
