Dyfyniad APA

Kotler,Philip. (2008). Principles of marketing (12th.). Pearson Prentice Hall.

Dyfyniad Arddull Chicago

Kotler,Philip. Principles of Marketing. 12th. New Delhi: Pearson Prentice Hall, 2008.

Dyfyniad MLA

Kotler,Philip. Principles of Marketing. 12th. Pearson Prentice Hall, 2008.

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