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Dyfyniad Arddull ChicagoKoontz, Harold. Board of Directors and Effective Management. NEW York: McGraw-Hill, 1967.
Dyfyniad MLAKoontz, Harold. Board of Directors and Effective Management. McGraw-Hill, 1967.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.