Roy J Lewicki. (2001). Essentials of negotiation. Boston, MA: McGraw-Hill.
Chicago Style aipamenaRoy J Lewicki. Essentials of Negotiation. Boston, MA: McGraw-Hill, 2001.
MLA aipamenaRoy J Lewicki. Essentials of Negotiation. Boston, MA: McGraw-Hill, 2001.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.