Gale Group. (2008). Gale encyclopedia of world history: Governments. Gale.
Chicagoスタイル(17版)引用形式Gale Group. Gale Encyclopedia of World History: Governments. Detroit, Mich: Gale, 2008.
MLA(9版)引用形式Gale Group. Gale Encyclopedia of World History: Governments. Gale, 2008.
警告: この引用は必ずしも正確ではありません.