Dyfyniad APA

Kotler,Philip. (1987). Principles of marketing/3e (3rd ed.). Prentice Hall of India.

Dyfyniad Arddull Chicago

Kotler,Philip. Principles of Marketing/3e. 3rd ed. New Delhi: Prentice Hall of India, 1987.

Dyfyniad MLA

Kotler,Philip. Principles of Marketing/3e. 3rd ed. Prentice Hall of India, 1987.

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