APA (7th ed.) Citation

Hellinghaus, O. Archivmaterialien zu Otto Hellinghaus, 1853-1935.

Chicago Style (17th ed.) Citation

Hellinghaus, Otto. Archivmaterialien Zu Otto Hellinghaus, 1853-1935.

MLA (9th ed.) Citation

Hellinghaus, Otto. Archivmaterialien Zu Otto Hellinghaus, 1853-1935.

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