Harold R Doughty. (1994). Guide to American graduate schools. New York: Penguin Books.
Trích dẫn kiểu ChicagoHarold R Doughty. Guide to American Graduate Schools. New York: Penguin Books, 1994.
MLA CitationHarold R Doughty. Guide to American Graduate Schools. New York: Penguin Books, 1994.
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