Sterne, J. (1996). Customer service on the Internet. John Wiley & sons.
Chicago Style aipamenaSterne, Jim. Customer Service on the Internet. New York: John Wiley & sons, 1996.
MLA aipamenaSterne, Jim. Customer Service on the Internet. John Wiley & sons, 1996.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.