Your professor may require you to find scholarly sources popular sources, secondary sources or primary sources on your topic. Here's a very basic guide if you need more details:
Primary Sources: Primary sources are the raw stuff of history. Examples of primary sources:
Some Primary Sources are also known as popular sources.
Secondary or Scholarly Sources:
These are the peer reviewed articles and scholarly books that historians write after they have worked with the primary sources -- and consulted other secondary articles or books.
Historiography: Historiography is the study of how historians have interpreted historical events throughout time. The student of the historiography of the Peloponnesian War, for example, might want to compare Thucycides with colonial and revolutionary American interpretations of what Thucycides and other classical authors had to say about military might and democratic aspirations. One way of doing this comparative interpretation, is looking for bibliographies on a subject or using the keyword "historiography" in Library Search or an online scholarly database such as Historical Abstracts or America: History and Life.
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