Yadava, k. (2005). Services marketing (1st.). Arise Publishers & Distributors.
Chicago Style aipamenaYadava, kamal. Services Marketing. 1st. New Delhi: Arise Publishers & Distributors, 2005.
MLA aipamenaYadava, kamal. Services Marketing. 1st. Arise Publishers & Distributors, 2005.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.