Dyfyniad APA
Kotler, P. (2009). Marketing management (13th ed.). Pearson Prentice Hall.
Dyfyniad Arddull Chicago
Kotler, Philip. Marketing Management. 13th ed. Upper Saddle River, N.J. : Delhi: Pearson Prentice Hall, 2009.
Dyfyniad MLA
Kotler, Philip. Marketing Management. 13th ed. Pearson Prentice Hall, 2009.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.