APA (7th ed.) Zitazioa
Geddes, B. (2012). Advanced google adwords (2nd ed.). Wiley.
Chicago Style (17th ed.) Zitazioa
Geddes, Brad. Advanced Google Adwords. 2nd ed. Indianapolis, IN: Wiley, 2012.
MLA (9th ed.) Zitazioa
Geddes, Brad. Advanced Google Adwords. 2nd ed. Wiley, 2012.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.