APA (7th ed.) Citation

Helfritz, H. (2019). Archivmaterialien zu Hans Helfritz, 1902-1995.

Chicago Style (17th ed.) Citation

Helfritz, Hans. Archivmaterialien Zu Hans Helfritz, 1902-1995. 2019.

MLA (8th ed.) Citation

Helfritz, Hans. Archivmaterialien Zu Hans Helfritz, 1902-1995. 2019.

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