Dyfyniad APA

Kerin, R. A., Hartley, S. W., & Rudelius, W. (2009). Marketing: The core (3rd ed.). McGraw-Hill/Irwin.

Dyfyniad Arddull Chicago

Kerin, Roger A., Steven W. Hartley, and William Rudelius. Marketing: The Core. 3rd ed. Boston: McGraw-Hill/Irwin, 2009.

Dyfyniad MLA

Kerin, Roger A., et al. Marketing: The Core. 3rd ed. McGraw-Hill/Irwin, 2009.

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