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Dyfyniad Arddull ChicagoGOODWORTH CLIVE T. HOW TO BE A SUPER-EFFECTIVE MANAGER. LONDON: BUSINESS PUBLICATION, 1984.
Dyfyniad MLAGOODWORTH CLIVE T. HOW TO BE A SUPER-EFFECTIVE MANAGER. BUSINESS PUBLICATION, 1984.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.