APA (7th ed.) Citation

Willoughby, W. C. Archivmaterialien zu William Charles Willoughby, 1857-1938.

Chicago Style (17th ed.) Citation

Willoughby, William Charles. Archivmaterialien Zu William Charles Willoughby, 1857-1938.

MLA (9th ed.) Citation

Willoughby, William Charles. Archivmaterialien Zu William Charles Willoughby, 1857-1938.

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