APA (7th ed.) Zitazioa
Etherington, B. (2008). Negotiating skills for virgins. Marshall Cavendish Business.
Chicago Style (17th ed.) Zitazioa
Etherington, Bob. Negotiating Skills for Virgins. London: Marshall Cavendish Business, 2008.
MLA (9th ed.) Zitazioa
Etherington, Bob. Negotiating Skills for Virgins. Marshall Cavendish Business, 2008.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.