Sheldon, S. (1982). Master of the game. Warner.
Dyfyniad Arddull ChicagoSheldon, Sidney. Master of the Game. New York, N.Y.: Warner, 1982.
Dyfyniad MLASheldon, Sidney. Master of the Game. Warner, 1982.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.