APA (7th ed.) Citation

Helin, J. (2019). Archivmaterialien zu Johannes Helin.

Chicago Style (17th ed.) Citation

Helin, Johannes. Archivmaterialien Zu Johannes Helin. 2019.

MLA (9th ed.) Citation

Helin, Johannes. Archivmaterialien Zu Johannes Helin. 2019.

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