APA (7th ed.) Citation

Keller, R. Archivmaterialien zu Rolf Keller, 1935-1998.

Chicago Style (17th ed.) Citation

Keller, Rolf. Archivmaterialien Zu Rolf Keller, 1935-1998.

MLA (9th ed.) Citation

Keller, Rolf. Archivmaterialien Zu Rolf Keller, 1935-1998.

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