Goodman, G. S. (2000). Monitoring, measuring and managing customer service (ed.). Jossey-Bass.
Chicago Style (17th ed.) ZitazioaGoodman, Gary S. Monitoring, Measuring and Managing Customer Service. ed. California: Jossey-Bass, 2000.
MLA (9th ed.) ZitazioaGoodman, Gary S. Monitoring, Measuring and Managing Customer Service. ed. Jossey-Bass, 2000.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.