APA (7th ed.) Zitazioa
Wirtz, J. (2016). Services marketing: People, technology, strategy (8th ed.). World Scientific.
Chicago Style (17th ed.) Zitazioa
Wirtz, Jochen. Services Marketing: People, Technology, Strategy. 8th ed. New Jersey: World Scientific, 2016.
MLA (9th ed.) Zitazioa
Wirtz, Jochen. Services Marketing: People, Technology, Strategy. 8th ed. World Scientific, 2016.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.