Heyel, C. (1962). Management for modern supervisions. American Management Association.
Dyfyniad Arddull ChicagoHeyel, Carl. Management for Modern Supervisions. U.S.A: American Management Association, 1962.
Dyfyniad MLAHeyel, Carl. Management for Modern Supervisions. American Management Association, 1962.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.