Weigert, H. W. (1942). German geopolitics. London: Oxford University Press.
Chicagoスタイル(17版)引用形式Weigert, Hans Werner. German Geopolitics. London: Oxford University Press, 1942.
MLA(8版)引用形式Weigert, Hans Werner. German Geopolitics. London: Oxford University Press, 1942.
警告: この引用は必ずしも正確ではありません.