Fells, R. (2010). Effective Negotiation. Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)Fells, Ray. Effective Negotiation. New Delhi: Cambridge University Press, 2010.
Lua MLA (9ú heag.)Fells, Ray. Effective Negotiation. Cambridge University Press, 2010.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.