Beamish, P. W., & Killing, J. P. (1997). Cooperative strategies: European perspectives. New Lexington Press.
Lua i Stíl Chicago (17ú heag.)Beamish, Paul W., agus J. Peter Killing. Cooperative Strategies: European Perspectives. San Francisco: New Lexington Press, 1997.
Lua MLA (9ú heag.)Beamish, Paul W., agus J. Peter Killing. Cooperative Strategies: European Perspectives. New Lexington Press, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.