APA aipamena

Shankar,Ravi. (2002). Services Marketing. Excel Books.

Chicago Style aipamena

Shankar,Ravi. Services Marketing. New Delhi: Excel Books, 2002.

MLA aipamena

Shankar,Ravi. Services Marketing. Excel Books, 2002.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.