Troll, W. Archivmaterialien zu Wilhelm Troll, 1897-1978.
Tohutoru Kātū Chicago (17th ed.)Troll, Wilhelm. Archivmaterialien Zu Wilhelm Troll, 1897-1978.
Tohutoro MLA (9th ed.)Troll, Wilhelm. Archivmaterialien Zu Wilhelm Troll, 1897-1978.
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