Lua APA (7ú heag.)

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

Lua i Stíl Chicago (17ú heag.)

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

Lua MLA (9ú heag.)

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

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.