APA (7th ed.) Zitazioa

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

Chicago Style (17th ed.) Zitazioa

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

MLA (9th ed.) Zitazioa

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