APA (7th ed.) Zitazioa

Johnson, L. K. (1991). America as a world power: Foreign policy in a constitutional framework. McGraw-Hill.

Chicago Style (17th ed.) Zitazioa

Johnson, Loch K. America as a World Power: Foreign Policy in a Constitutional Framework. New York: McGraw-Hill, 1991.

MLA (9th ed.) Zitazioa

Johnson, Loch K. America as a World Power: Foreign Policy in a Constitutional Framework. McGraw-Hill, 1991.