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शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAn Outline of American History. [Washington, D.C.]: Office of International Information Programs, United States Department of State, 1994.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAn Outline of American History. Office of International Information Programs, United States Department of State, 1994.
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