APA aipamena

Davidow, W. . H. (1989). Total customer service: The ultimate weapon. New York: Harper Perennial.

Chicago Style aipamena

Davidow, William H. Total Customer Service: The Ultimate Weapon. New York: Harper Perennial, 1989.

MLA aipamena

Davidow, William H. Total Customer Service: The Ultimate Weapon. New York: Harper Perennial, 1989.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.