Toynbee, A. (1948). A study of history. New York: Oxford University Press.
शिकागो स्टाइल उद्धरणToynbee, Arnold. A Study of History. New York: Oxford University Press, 1948.
एमएलए उद्धरणToynbee, Arnold. A Study of History. New York: Oxford University Press, 1948.
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