APA (7th ed.) Citation

Claß, H. Archivmaterialien zu Helmut Claß, 1913-1998.

Chicago Style (17th ed.) Citation

Claß, Helmut. Archivmaterialien Zu Helmut Claß, 1913-1998.

MLA (9th ed.) Citation

Claß, Helmut. Archivmaterialien Zu Helmut Claß, 1913-1998.

Warning: These citations may not always be 100% accurate.