Dyfyniad APA

Bearden, W. O. (2007). Marketing: Principles and perspectives. Boston: McGraw-Hill/Irwin.

Dyfyniad Arddull Chicago

Bearden, William O. Marketing: Principles and Perspectives. Boston: McGraw-Hill/Irwin, 2007.

Dyfyniad MLA

Bearden, William O. Marketing: Principles and Perspectives. Boston: McGraw-Hill/Irwin, 2007.

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