Cita APA (7th ed.)
Warmbrunn, W. (1993). The German occupation of Belgium 1940-1944. Peter Lang.
Cita Chicago (17th ed.)
Warmbrunn, Werner. The German Occupation of Belgium 1940-1944. New York: Peter Lang, 1993.
Cita MLA (9th ed.)
Warmbrunn, Werner. The German Occupation of Belgium 1940-1944. Peter Lang, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.