APA (7th ed.) Citation

Sumner, C. (2019). Archivmaterialien zu Claude Sumner.

Chicago Style (17th ed.) Citation

Sumner, Claude. Archivmaterialien Zu Claude Sumner. 2019.

MLA (9th ed.) Citation

Sumner, Claude. Archivmaterialien Zu Claude Sumner. 2019.

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