APA (7th ed.) Citation

Keller, H. (2019). Archivmaterialien zu Hagen Keller, 1937-.

Chicago Style (17th ed.) Citation

Keller, Hagen. Archivmaterialien Zu Hagen Keller, 1937-. 2019.

MLA (8th ed.) Citation

Keller, Hagen. Archivmaterialien Zu Hagen Keller, 1937-. 2019.

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