Wingate, J. W., Nolan, C. A., & Walters, R. G. (1964). Fundamentals of selling: Meeting consumer demand (8th ed.). South-western Pub. Co.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWingate, John Williams, Carroll Anthony Nolan, और R. G. Walters. Fundamentals of Selling: Meeting Consumer Demand. 8th ed. Cincinnati: South-western Pub. Co, 1964.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWingate, John Williams, et al. Fundamentals of Selling: Meeting Consumer Demand. 8th ed. South-western Pub. Co, 1964.
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