Keith Davis. (1966). Business and its environment. London: McGraw- Hill Book Company.
Dyfyniad Arddull ChicagoKeith Davis. Business and Its Environment. London: McGraw- Hill Book Company, 1966.
Dyfyniad MLAKeith Davis. Business and Its Environment. London: McGraw- Hill Book Company, 1966.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.