Walters, R. G., & Wingate, J. W. (1948). Fundamentals of selling: Meeting consumer demand (5th ed.). South-Western Pub. Co..
Citace podle Chicago (17th ed.)Walters, R. G., a John Williams Wingate. Fundamentals of Selling: Meeting Consumer Demand. 5th ed. Cincinnati: South-Western Pub. Co., 1948.
Citace podle MLA (8th ed.)Walters, R. G., a John Williams Wingate. Fundamentals of Selling: Meeting Consumer Demand. 5th ed. South-Western Pub. Co., 1948.
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