Lua APA (7ú heag.)
Barsky, J. D. (1995). World-class customer satisfaction. Irwin Professional Pub..
Lua i Stíl Chicago (17ú heag.)
Barsky, Jonathan D. World-class Customer Satisfaction. Burr Ridge, Ill.: Irwin Professional Pub., 1995.
Lua MLA (9ú heag.)
Barsky, Jonathan D. World-class Customer Satisfaction. Irwin Professional Pub., 1995.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.