Dyfyniad APA

Kotler, P., & Armstrong, G. (1984). Principles of marketing/2nd ed (2nd ed.). Prentice-Hall of India.

Dyfyniad Arddull Chicago

Kotler, Philip, and Gary Armstrong. Principles of Marketing/2nd Ed. 2nd ed. New Delhi: Prentice-Hall of India, 1984.

Dyfyniad MLA

Kotler, Philip, and Gary Armstrong. Principles of Marketing/2nd Ed. 2nd ed. Prentice-Hall of India, 1984.

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