OBRIEN MARK. (1984). MBA ANSWER BOOK: A CARRER GUIDE FOR PERSON WHO MEAN BUSINESS. PRENTICE -HALL INTERNATIONAL, INC.
Chicago-viite (17. p.)OBRIEN MARK. MBA ANSWER BOOK: A CARRER GUIDE FOR PERSON WHO MEAN BUSINESS. NEW JERSE: PRENTICE -HALL INTERNATIONAL, INC, 1984.
MLA-viite (9. p.)OBRIEN MARK. MBA ANSWER BOOK: A CARRER GUIDE FOR PERSON WHO MEAN BUSINESS. PRENTICE -HALL INTERNATIONAL, INC, 1984.
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