Acuff, F. L. (1997). How to negotiate anything with anyone anywhere around the world (New expanded ed.). American Management Association.
Chicago Style aipamenaAcuff, Frank L. How to Negotiate Anything with Anyone Anywhere Around the World. New expanded ed. New York: American Management Association, 1997.
MLA aipamenaAcuff, Frank L. How to Negotiate Anything with Anyone Anywhere Around the World. New expanded ed. American Management Association, 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.