Manning,Gerald L. (1990). Selling today: A personal approach (4th ed.). Allyn and Bacon.
Chicago Style (17th ed.) CitationManning,Gerald L. Selling Today: A Personal Approach. 4th ed. Boston: Allyn and Bacon, 1990.
MLA (9th ed.) CitationManning,Gerald L. Selling Today: A Personal Approach. 4th ed. Allyn and Bacon, 1990.
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