Dyfyniad APA

Hartley, R. F. (1998). Marketing mistakes and successes (7th edition.). New York: John Wiley & Sons.

Dyfyniad Arddull Chicago

Hartley, Robert F. Marketing Mistakes and Successes. 7th edition. New York: John Wiley & Sons, 1998.

Dyfyniad MLA

Hartley, Robert F. Marketing Mistakes and Successes. 7th edition. New York: John Wiley & Sons, 1998.

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