Bailey, K. (1997). Cuswtomer service for Dummies. Comdex.
Lua i Stíl Chicago (17ú heag.)Bailey, Keith. Cuswtomer Service for Dummies. New Delhi: Comdex, 1997.
Lua MLA (9ú heag.)Bailey, Keith. Cuswtomer Service for Dummies. Comdex, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.