APA (7th ed.) Zitazioa

Hansen, R. D. (1979). Beyond the North-South stalemate. McGraw-Hill Book Co..

Chicago Style (17th ed.) Zitazioa

Hansen, Roger D. Beyond the North-South Stalemate. New York: McGraw-Hill Book Co., 1979.

MLA (9th ed.) Zitazioa

Hansen, Roger D. Beyond the North-South Stalemate. McGraw-Hill Book Co., 1979.