Hansen, R. D. (1979). Beyond the North-South stalemate. McGraw-Hill Book Co..
Lua i Stíl Chicago (17ú heag.)Hansen, Roger D. Beyond the North-South Stalemate. New York: McGraw-Hill Book Co., 1979.
Lua MLA (9ú heag.)Hansen, Roger D. Beyond the North-South Stalemate. McGraw-Hill Book Co., 1979.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.