Johnson Spencer. (1998). Who Moved My Cheese: An Amazing Way to Deal with Change in Your Work & in Your LIfe. Vermillion.
Dyfyniad Arddull ChicagoJohnson Spencer. Who Moved My Cheese: An Amazing Way to Deal with Change in Your Work & in Your LIfe. London: Vermillion, 1998.
Dyfyniad MLAJohnson Spencer. Who Moved My Cheese: An Amazing Way to Deal with Change in Your Work & in Your LIfe. Vermillion, 1998.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.