"[A]t least four books and/or peer reviewed sources" are necessary to receive a "C" on your research paper. An "A" paper has "a large number of peer reviewed strong and academically respected sources."
See the syllabus for further information.
"Peer-reviewed [refereed] journals are publications that include only those articles that have been reviewed and/or qualified by a selected panel of acknowledged experts in the field of study covered by the journal" (Ebsco Help).
Note: There are many strong journals that specialize in a particular area.
Suggested Scholarly International Relations Journals
Note: There are many journals that specialize in a particular geographical region (such Europe, Asia, Africa) or even a particular country (such as Turkey or China) or subject area (such as terrorism or the economy).
Article Databases: Ranked by Relevance
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Available as an e-book: