APA (7th ed.) Citation

Keller, H. Archivmaterialien zu Hagen Keller, 1937-.

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

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