APA (7th ed.) Citation

Ehlers, P. N. Archivmaterialien zu Paul Nikolai Ehlers, 1920-2007.

Chicago Style (17th ed.) Citation

Ehlers, Paul Nikolai. Archivmaterialien Zu Paul Nikolai Ehlers, 1920-2007.

MLA (9th ed.) Citation

Ehlers, Paul Nikolai. Archivmaterialien Zu Paul Nikolai Ehlers, 1920-2007.

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