Gingrich Library: Your Success Is Why We're Here!
A primary source is original or new material on which other research is based. A secondary source analyzes, evaluates, re-packages, summarizes or reorganizes information reported by researchers in the primary literature. Many books including textbooks, newspaper or magazine articles, encyclopedias, and scholarly review articles are examples of secondary sources.
Below is a brief video, uploaded to Youtube by Imagine Easy Solutions, describing how you can tell Primary from Secondary sources .