Dyfyniad APA

Kotler,Philip, & Armstrong,Gary. (1996). Principles of marketing (7th ed.). Prentice Hall.

Dyfyniad Arddull Chicago

Kotler,Philip, and Armstrong,Gary. Principles of Marketing. 7th ed. New Delhi: Prentice Hall, 1996.

Dyfyniad MLA

Kotler,Philip, and Armstrong,Gary. Principles of Marketing. 7th ed. Prentice Hall, 1996.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.