APA (7th ed.) Citation

Ehlen, N. Archivmaterialien zu Nikolaus Ehlen, 1886-1965.

Chicago Style (17th ed.) Citation

Ehlen, Nikolaus. Archivmaterialien Zu Nikolaus Ehlen, 1886-1965.

MLA (9th ed.) Citation

Ehlen, Nikolaus. Archivmaterialien Zu Nikolaus Ehlen, 1886-1965.

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