Ropke, W. (1946). The Solution of the German Problem. New York: G. P. Putnam's Sons.
Čikaški stil citiranjaRopke, Wilhelm. The Solution of the German Problem. New York: G. P. Putnam's Sons, 1946.
MLA način citiranjaRopke, Wilhelm. The Solution of the German Problem. New York: G. P. Putnam's Sons, 1946.
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