Koch, E. Archivmaterialien zu Eckehard Koch, 1948-.
Tohutoru Kātū Chicago (17th ed.)Koch, Eckehard. Archivmaterialien Zu Eckehard Koch, 1948-.
Tohutoro MLA (9th ed.)Koch, Eckehard. Archivmaterialien Zu Eckehard Koch, 1948-.
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