Dyfyniad APA

KOTLER, P. (2010). Principles of marketing 13th edition. Pearson.

Dyfyniad Arddull Chicago

KOTLER, Philip. Principles of Marketing 13th Edition. Pearson, 2010.

Dyfyniad MLA

KOTLER, Philip. Principles of Marketing 13th Edition. Pearson, 2010.

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