APA (7th ed.) Citation

Küppers, P. E. Archivmaterialien zu Paul Erich Küppers, 1889-1922.

Chicago Style (17th ed.) Citation

Küppers, Paul Erich. Archivmaterialien Zu Paul Erich Küppers, 1889-1922.

MLA (9th ed.) Citation

Küppers, Paul Erich. Archivmaterialien Zu Paul Erich Küppers, 1889-1922.

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