Ryder, R. D. (2003). Brands, trademarks and advertising. Lexis Nexis.
Dyfyniad Arddull ChicagoRyder, Rodney D. Brands, Trademarks and Advertising. New Delhi: Lexis Nexis, 2003.
Dyfyniad MLARyder, Rodney D. Brands, Trademarks and Advertising. Lexis Nexis, 2003.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.