Dyfyniad APA

Bolling, C. (1930). Retail Salesmanship (2nd.). Isaman Pitman.

Dyfyniad Arddull Chicago

Bolling, C. Retail Salesmanship. 2nd. London: Isaman Pitman, 1930.

Dyfyniad MLA

Bolling, C. Retail Salesmanship. 2nd. Isaman Pitman, 1930.

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