Curtis, M. (1967). The nature of politics. New York: The Hearst Corporation.
शिकागो स्टाइल उद्धरणCurtis, Michael. The Nature of Politics. New York: The Hearst Corporation, 1967.
एमएलए उद्धरणCurtis, Michael. The Nature of Politics. New York: The Hearst Corporation, 1967.
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