APA aipamena

Lucas, R. W. (2005). Customer service. New York: McGraw - Hill.

Chicago Style aipamena

Lucas, Robert W. Customer Service. New York: McGraw - Hill, 2005.

MLA aipamena

Lucas, Robert W. Customer Service. New York: McGraw - Hill, 2005.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.