APA (7th ed.) Citation

Janssen, U. Archivmaterialien zu Ulfert Janssen, 1878-1956.

Chicago Style (17th ed.) Citation

Janssen, Ulfert. Archivmaterialien Zu Ulfert Janssen, 1878-1956.

MLA (9th ed.) Citation

Janssen, Ulfert. Archivmaterialien Zu Ulfert Janssen, 1878-1956.

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