There are three types of sources you might consult for your research projects:
Primary sources | Secondary sources | Tertiary sources | |
---|---|---|---|
What they are |
Evidence |
Analysis |
Overviews |
Examples |
|
|
|
How they help you | They provide evidence to support your statements. | They tell you what other people think about your topic. | They introduce you to new concepts and help you find citable sources -- but are not themselves citable. |
A good research strategy is to work backward -- that is, start with overviews (tertiary sources), which are easy to find, and use the clues in the tertiary sources to find secondary and primary sources.