APA (7th ed.) Citation

Keller, R. E. Archivmaterialien zu Rudolf E. Keller, 1920-2014.

Chicago Style (17th ed.) Citation

Keller, Rudolf E. Archivmaterialien Zu Rudolf E. Keller, 1920-2014.

MLA (9th ed.) Citation

Keller, Rudolf E. Archivmaterialien Zu Rudolf E. Keller, 1920-2014.

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