APA (7th ed.) Citation

Keller, K. Archivmaterialien zu Karl Keller, 1784-1855.

Chicago Style (17th ed.) Citation

Keller, Karl. Archivmaterialien Zu Karl Keller, 1784-1855.

MLA (9th ed.) Citation

Keller, Karl. Archivmaterialien Zu Karl Keller, 1784-1855.

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