Pettigrew, T. F. (1996). How to think like a social scientist. New York: HarperCollins College.
Trích dẫn kiểu ChicagoPettigrew, Thomas F. How to Think Like a Social Scientist. New York: HarperCollins College, 1996.
Deismireacht MLAPettigrew, Thomas F. How to Think Like a Social Scientist. New York: HarperCollins College, 1996.
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