APA (7th ed.) Citation

Janzen, J. G. (2019). Archivmaterialien zu John Gerald Janzen, 1932-.

Chicago Style (17th ed.) Citation

Janzen, John Gerald. Archivmaterialien Zu John Gerald Janzen, 1932-. 2019.

MLA (8th ed.) Citation

Janzen, John Gerald. Archivmaterialien Zu John Gerald Janzen, 1932-. 2019.

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