Arens, W. F. (2002). Contemporary advertising. Boston: McGraw-Hill Irwin.
Dyfyniad Arddull ChicagoArens, William F. Contemporary Advertising. Boston: McGraw-Hill Irwin, 2002.
Dyfyniad MLAArens, William F. Contemporary Advertising. Boston: McGraw-Hill Irwin, 2002.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.