Weigert, H. W. (1942). German geopolitics. London: Oxford University Press.
Cita Chicago (17th ed.)Weigert, Hans Werner. German Geopolitics. London: Oxford University Press, 1942.
Cita MLA (8th ed.)Weigert, Hans Werner. German Geopolitics. London: Oxford University Press, 1942.
Atenció: Aquestes cites poden no estar 100% correctes.