OBRIEN MARK. (1984). MBA ANSWER BOOK: A CARRER GUIDE FOR PERSON WHO MEAN BUSINESS. PRENTICE -HALL INTERNATIONAL, INC.
Dyfyniad Arddull ChicagoOBRIEN MARK. MBA ANSWER BOOK: A CARRER GUIDE FOR PERSON WHO MEAN BUSINESS. NEW JERSE: PRENTICE -HALL INTERNATIONAL, INC, 1984.
Dyfyniad MLAOBRIEN MARK. MBA ANSWER BOOK: A CARRER GUIDE FOR PERSON WHO MEAN BUSINESS. PRENTICE -HALL INTERNATIONAL, INC, 1984.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.