APA (7th ed.) Citation

Keller, W. Archivmaterialien zu Wilhelm Keller, 1909-1987.

Chicago Style (17th ed.) Citation

Keller, Wilhelm. Archivmaterialien Zu Wilhelm Keller, 1909-1987.

MLA (9th ed.) Citation

Keller, Wilhelm. Archivmaterialien Zu Wilhelm Keller, 1909-1987.

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