Dyfyniad APA

Wells, W. (1998). Advertising: Principles and practice (4th ed.). Prentice-Hall of India.

Dyfyniad Arddull Chicago

Wells, William. Advertising: Principles and Practice. 4th ed. New Jersey: Prentice-Hall of India, 1998.

Dyfyniad MLA

Wells, William. Advertising: Principles and Practice. 4th ed. Prentice-Hall of India, 1998.

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