Gardiner, P. (1959). Theories of history: Readings from classical and contemporary sources. Free Press.
Trích dẫn kiểu ChicagoGardiner, Patrick. Theories of History: Readings from Classical and Contemporary Sources. New York: Free Press, 1959.
Trích dẫn MLAGardiner, Patrick. Theories of History: Readings from Classical and Contemporary Sources. Free Press, 1959.
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