APA (7th ed.) Citation

Knopf, R. Archivmaterialien zu Rudolf Knopf, 1874-1920.

Chicago Style (17th ed.) Citation

Knopf, Rudolf. Archivmaterialien Zu Rudolf Knopf, 1874-1920.

MLA (9th ed.) Citation

Knopf, Rudolf. Archivmaterialien Zu Rudolf Knopf, 1874-1920.

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