Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.