Berding, H. Archivmaterialien zu Helmut Berding, 1930-2019.
Tohutoru Kātū Chicago (17th ed.)Berding, Helmut. Archivmaterialien Zu Helmut Berding, 1930-2019.
Tohutoro MLA (9th ed.)Berding, Helmut. Archivmaterialien Zu Helmut Berding, 1930-2019.
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