APA (7e ed.) Bronvermelding

Gerson, R. F. (1998). Beyond customer service, revised (Rev. ed.). Crisp Publications.

Chicago (17e ed.) Bronvermelding

Gerson, Richard F. Beyond Customer Service, Revised. Rev. ed. Menlo Park, Calif.: Crisp Publications, 1998.

MLA (9e ed.) Bronvermelding

Gerson, Richard F. Beyond Customer Service, Revised. Rev. ed. Crisp Publications, 1998.