Video produced by the University of California, San Diego's Social Sciences & Humanities Library.
"Primary sources provide first-hand testimony or direct evidence
concerning a topic under investigation. They are created by witnesses or
recorders who experienced the events or conditions being documented.
Often these sources are created at the time when the events or
conditions are occurring, but primary sources can also include
autobiographies, memoirs, and oral histories recorded later. Primary
sources are characterized by their content, regardless of whether they
are available in original format, in microfilm/microfiche, in digital
format, or in published format." -- Yale University
Examples of primary sources include
CC Special Collections
The following sites offer guides to citing primary sources in the Chicago style:
Citation at a Glance: Primary Source from a Web Site (Diana Hacker)