Answered By: Mark Glen Bilby, Ph.D.
Last Updated: May 20, 2016     Views: 31

Primary sources, documents that speak for the creators themselves, are almost always considered credible academic sources, particularly when the creators are the subject(s) or focus of the research.

Secondary sources, in which persons are speaking about other persons or things, are a mixed bag of reliable and unreliable information. One of the best ways to evaluate secondary sources is by using the CRAAP test criteria as found in the worksheet linked below.