Bittel, L. R. (1978). Encyclopedia of professional management. McGraw-Hill.
Chicago Edition CitationBittel, Lester Robert. Encyclopedia of Professional Management. New York: McGraw-Hill, 1978.
Cita MLABittel, Lester Robert. Encyclopedia of Professional Management. McGraw-Hill, 1978.
Atenció: Aquestes cites poden no estar 100% correctes.