Dyfyniad APA
Kotler, P., & Keller, K. L. (2006). Marketing management (12th ed.). Pearson Prentice Hall.
Dyfyniad Arddull Chicago
Kotler, Philip, and Kevin Lane Keller. Marketing Management. 12th ed. New Delhi: Pearson Prentice Hall, 2006.
Dyfyniad MLA
Kotler, Philip, and Kevin Lane Keller. Marketing Management. 12th ed. Pearson Prentice Hall, 2006.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.