Various. Harper's Young People, January 13, 1880 An Illustrated Weekly.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रVarious. Harper's Young People, January 13, 1880 An Illustrated Weekly.
एमएलए (9वां संस्करण) प्रशस्ति पत्रVarious. Harper's Young People, January 13, 1880 An Illustrated Weekly.
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