Spangle, M. (2003). Negotiation: Communication for diverse settings. Sage.
Lua i Stíl Chicago (17ú heag.)Spangle, Michael. Negotiation: Communication for Diverse Settings. Thousand Oaks, CA: Sage, 2003.
Lua MLA (9ú heag.)Spangle, Michael. Negotiation: Communication for Diverse Settings. Sage, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.