Dyfyniad APA

Giles, G. B. (1974). Marketing (2nd ed.). English Language Book Society.

Dyfyniad Arddull Chicago

Giles, G B. Marketing. 2nd ed. London: English Language Book Society, 1974.

Dyfyniad MLA

Giles, G B. Marketing. 2nd ed. English Language Book Society, 1974.

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