BITTEL, L. R. [., & RAMSEY, J. E. [. (1989). Encyclopedia of professional management vol 2.-- Ed.2. Grolier International.
Cita Chicago (17th ed.)BITTEL, Lester Robert [Ed.], i Jackson E. [Ed.] RAMSEY. Encyclopedia of Professional Management Vol 2.-- Ed.2. Danbury: Grolier International, 1989.
Cita MLA (9th ed.)BITTEL, Lester Robert [Ed.], i Jackson E. [Ed.] RAMSEY. Encyclopedia of Professional Management Vol 2.-- Ed.2. Grolier International, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.