APA (7th ed.) Citation

Happel, O. Archivmaterialien zu Otto Happel, 1866-1932.

Chicago Style (17th ed.) Citation

Happel, Otto. Archivmaterialien Zu Otto Happel, 1866-1932.

MLA (9th ed.) Citation

Happel, Otto. Archivmaterialien Zu Otto Happel, 1866-1932.

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