Manning, G. (2003). The art of leadershipGeorge Manning, Kent Curtis. McGraw-Hill.
Dyfyniad Arddull ChicagoManning, George. The Art of LeadershipGeorge Manning, Kent Curtis. McGraw-Hill, 2003.
Dyfyniad MLAManning, George. The Art of LeadershipGeorge Manning, Kent Curtis. McGraw-Hill, 2003.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.