Dyfyniad APA

Sullivan, L., & Bennett, S. (2012). Hey, Whipple, squeeze this!: The classic guide to creating great advertising (4th ed.). Wiley.

Dyfyniad Arddull Chicago

Sullivan, Luke, and Sam Bennett. Hey, Whipple, Squeeze This!: The Classic Guide to Creating Great Advertising. 4th ed. Hoboken, N.J.: Wiley, 2012.

Dyfyniad MLA

Sullivan, Luke, and Sam Bennett. Hey, Whipple, Squeeze This!: The Classic Guide to Creating Great Advertising. 4th ed. Wiley, 2012.

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