Winchell, C. M. (1951). Guide to reference books (7th ed.). American Library Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWinchell, Constance Mabel. Guide to Reference Books. 7th ed. Chicago: American Library Association, 1951.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWinchell, Constance Mabel. Guide to Reference Books. 7th ed. American Library Association, 1951.
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