Enke, A. Archivmaterialien zu Alfred Enke, 1887-1976.
Tohutoru Kātū Chicago (17th ed.)Enke, Alfred. Archivmaterialien Zu Alfred Enke, 1887-1976.
Tohutoro MLA (9th ed.)Enke, Alfred. Archivmaterialien Zu Alfred Enke, 1887-1976.
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