Wentzcke, P. (1925). Rheinkampf: Paul Wentzcke. Vowinckel.
Lua i Stíl Chicago (17ú heag.)Wentzcke, Paul. Rheinkampf: Paul Wentzcke. Berlin-Grunewald: Vowinckel, 1925.
Lua MLA (8ú heag.)Wentzcke, Paul. Rheinkampf: Paul Wentzcke. Vowinckel, 1925.
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