APA (7e ed.) Bronvermelding

ENCYCLOPEDIA OF PROFESSIONAL. & BITTEL, L. R. e. [. (1978). Encyclopedia of professional management/editor Lester Robert Bittel et.al. Grolier International.

Chicago (17e ed.) Bronvermelding

ENCYCLOPEDIA OF PROFESSIONAL. en Lester Robert et.al [ed] BITTEL. Encyclopedia of Professional Management/editor Lester Robert Bittel Et.al. Danbury: Grolier International, 1978.

MLA (9e ed.) Bronvermelding

ENCYCLOPEDIA OF PROFESSIONAL. en Lester Robert et.al [ed] BITTEL. Encyclopedia of Professional Management/editor Lester Robert Bittel Et.al. Grolier International, 1978.