Primary, Secondary and Tertiary Sources

Primary Secondary & Tertiary Sources in Disciplines

Using the Source

What is considered a primary source can vary depending on how you are using the source. 

For instance, if you were analyzing how authors of popular magazine articles discussed the Boeing 737 MAX crashes, the magazine articles would serve as your primary sources.  However, if you cited from a magazine article for your research paper on airline safety, the magazine would serve as a secondary source.

Different Disciplines

Disciplines may be more or less likely to work with specific types of primary sources. See this chart for examples.  If you are unsure what is considered a primary source in your discipline, consult with your faculty instructor.