APA (7th ed.) Citation

Janssen, H. Archivmaterialien zu Heinrich Janssen, 1913-2002.

Chicago Style (17th ed.) Citation

Janssen, Heinrich. Archivmaterialien Zu Heinrich Janssen, 1913-2002.

MLA (9th ed.) Citation

Janssen, Heinrich. Archivmaterialien Zu Heinrich Janssen, 1913-2002.

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