Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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