Dyfyniad APA

Edwards, C. M., & Brown, R. A. (1959). Retail advertising and sales promotion (3rd ed.). Prentice-hall.

Dyfyniad Arddull Chicago

Edwards, Charles M., and Russell A. Brown. Retail Advertising and Sales Promotion. 3rd ed. New Jersey: Prentice-hall, 1959.

Dyfyniad MLA

Edwards, Charles M., and Russell A. Brown. Retail Advertising and Sales Promotion. 3rd ed. Prentice-hall, 1959.

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