Rothschild, W. E. (1989). How to gain and maintain the competitive advantage in business. Mc-Graw Hill.
Dyfyniad Arddull ChicagoRothschild, William E. How to Gain and Maintain the Competitive Advantage in Business. New York: Mc-Graw Hill, 1989.
Dyfyniad MLARothschild, William E. How to Gain and Maintain the Competitive Advantage in Business. Mc-Graw Hill, 1989.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.