Lewicki, R. J. (2007). Essentials of NegotiationRoy J. Lewicki, Bruce Barry and David M. Sauders. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Lewicki, Roy J. Essentials of NegotiationRoy J. Lewicki, Bruce Barry and David M. Sauders. McGraw-Hill, 2007.
Lua MLA (8ú heag.)Lewicki, Roy J. Essentials of NegotiationRoy J. Lewicki, Bruce Barry and David M. Sauders. McGraw-Hill, 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.