Ludwig, E. (1970). Wilhelm Hohenzollern, the last of the Kaisers. AMS Press.
Chicagoスタイル(17版)引用形式Ludwig, Emil. Wilhelm Hohenzollern, the Last of the Kaisers. New York: AMS Press, 1970.
MLA(8版)引用形式Ludwig, Emil. Wilhelm Hohenzollern, the Last of the Kaisers. AMS Press, 1970.
警告: この引用は必ずしも正確ではありません.