Visit the Primary Sources guide to learn more about finding primary sources.
Historians use the term primary source to describe all sources that are original. Primary sources provide firsthand information that is closest to the object of study.
A secondary source is a source that provides non-original or secondhand data or information.
Turabian, K. L. (2018). A Manual for Writers of Research Papers, Theses, and Dissertations. Ninth Edition. Chicago: University of Chicago Press.
Galvan, J. L. (2013). Writing literature reviews: A guide for students of the social and behavioral sciences. Glendale, CA: Pyrczak.
Persaud, N. (2010). “Primary data source.” In N. Salkind (Ed.), Encyclopedia of research design. (pp. 1095-1098). Thousand Oaks, CA: SAGE Publications, Inc.
“Secondary Source.” (2005). In W. Paul Vogt (Ed.), Dictionary of Statistics & Methodology. (p. 291). Third Edition. Thousand Oaks, CA: SAGE Publications, Inc.
Weidenborner, S. & Caruso, D. (1997). Writing research papers: A guide to the process. New York: St. Martin's Press.