Dyfyniad APA

KOTLER, P. (1984). Principles of marketing.-- Ed.2. Prentice-Hall of India.

Dyfyniad Arddull Chicago

KOTLER, Philip. Principles of Marketing.-- Ed.2. New Delhi: Prentice-Hall of India, 1984.

Dyfyniad MLA

KOTLER, Philip. Principles of Marketing.-- Ed.2. Prentice-Hall of India, 1984.

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