Gardiner, P. (1959). Theories of history: Readings from classical and contemporary sources. Free Press.
शिकागो स्टाइल उद्धरणGardiner, Patrick. Theories of History: Readings from Classical and Contemporary Sources. New York: Free Press, 1959.
एमएलए उद्धरणGardiner, Patrick. Theories of History: Readings from Classical and Contemporary Sources. Free Press, 1959.
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