Briggs, R. (1999). Ethel & Ernest (1st U.S. ed.). Knopf : Distributed by Random House.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBriggs, Raymond. Ethel & Ernest. 1st U.S. ed. New York: Knopf : Distributed by Random House, 1999.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBriggs, Raymond. Ethel & Ernest. 1st U.S. ed. Knopf : Distributed by Random House, 1999.
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