Doyle, C. (2003). Collins Dictionary: Marketing. Harper Collins.
Dyfyniad Arddull ChicagoDoyle, Charles. Collins Dictionary: Marketing. Glasgow: Harper Collins, 2003.
Dyfyniad MLADoyle, Charles. Collins Dictionary: Marketing. Harper Collins, 2003.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.