APA (7th ed.) Citation

Keller, S. Archivmaterialien zu Samuel Keller, 1856-1925.

Chicago Style (17th ed.) Citation

Keller, Samuel. Archivmaterialien Zu Samuel Keller, 1856-1925.

MLA (9th ed.) Citation

Keller, Samuel. Archivmaterialien Zu Samuel Keller, 1856-1925.

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