Παραπομπή APA

Chang, R. Y., & Keith Kelly, P. (1994). Satisfying internal customers first. Wheeler Publishing.

Παραπομπή Chicago Style

Chang, Richard Y., και P. Keith Kelly. Satisfying Internal Customers First. New Delhi: Wheeler Publishing, 1994.

Παραπομπή MLA

Chang, Richard Y., και P. Keith Kelly. Satisfying Internal Customers First. Wheeler Publishing, 1994.