APA (7th ed.) Citation

Klopfer, P. Archivmaterialien zu Paul Klopfer, 1876-1967.

Chicago Style (17th ed.) Citation

Klopfer, Paul. Archivmaterialien Zu Paul Klopfer, 1876-1967.

MLA (9th ed.) Citation

Klopfer, Paul. Archivmaterialien Zu Paul Klopfer, 1876-1967.

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