Arens, W. F. (2007). Essentials of contemporary advertising. Boston: McGraw-Hill.
Dyfyniad Arddull ChicagoArens, William F. Essentials of Contemporary Advertising. Boston: McGraw-Hill, 2007.
Dyfyniad MLAArens, William F. Essentials of Contemporary Advertising. Boston: McGraw-Hill, 2007.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.