Cita APA (7th ed.)

Bittel, L. R., & Bittel, M. A. (1978). Encyclopedia of professional management. McGraw-Hill.

Cita Chicago (17th ed.)

Bittel, Lester Robert, i Muriel Albers Bittel. Encyclopedia of Professional Management. New York: McGraw-Hill, 1978.

Cita MLA (9th ed.)

Bittel, Lester Robert, i Muriel Albers Bittel. Encyclopedia of Professional Management. McGraw-Hill, 1978.