Spangle, M. (2003). Negotiations: Communications for diverse settings. Sage Publication.
Chicago Style aipamenaSpangle, Michael. Negotiations: Communications for Diverse Settings. Sage Publication, 2003.
MLA aipamenaSpangle, Michael. Negotiations: Communications for Diverse Settings. Sage Publication, 2003.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.