Dyfyniad APA

Kotler, P. (2006). Principles of marketing (11th ed.). Pearson Education.

Dyfyniad Arddull Chicago

Kotler, Philip. Principles of Marketing. 11th ed. Delhi: Pearson Education, 2006.

Dyfyniad MLA

Kotler, Philip. Principles of Marketing. 11th ed. Pearson Education, 2006.

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