APA (7th ed.) Citation

Helm, J. Archivmaterialien zu Joseph Helm, 1798-1861.

Chicago Style (17th ed.) Citation

Helm, Joseph. Archivmaterialien Zu Joseph Helm, 1798-1861.

MLA (9th ed.) Citation

Helm, Joseph. Archivmaterialien Zu Joseph Helm, 1798-1861.

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