Varg, P. A. (1979). United States foreign relations, 1820-1860. Michigan State University Press.
Chicagoスタイル(17版)引用形式Varg, Paul A. United States Foreign Relations, 1820-1860. East Lansing: Michigan State University Press, 1979.
MLA(8版)引用形式Varg, Paul A. United States Foreign Relations, 1820-1860. Michigan State University Press, 1979.
警告: この引用は必ずしも正確ではありません.