Gardner, N. D. (1976). Principes de direction des entreprises =: Effective executive practices. Paris: Gamma.
Dyfyniad Arddull ChicagoGardner, Neely D. Principes De Direction Des Entreprises =: Effective Executive Practices. Paris: Gamma, 1976.
Dyfyniad MLAGardner, Neely D. Principes De Direction Des Entreprises =: Effective Executive Practices. Paris: Gamma, 1976.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.