APA (7th ed.) Citation

Keller, W. Archivmaterialien zu Wilhelm Keller.

Chicago Style (17th ed.) Citation

Keller, Wilhelm. Archivmaterialien Zu Wilhelm Keller.

MLA (9th ed.) Citation

Keller, Wilhelm. Archivmaterialien Zu Wilhelm Keller.

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