APA (7th ed.) Citation

Frenz, H. Archivmaterialien zu Helmut Frenz, 1933-2011.

Chicago Style (17th ed.) Citation

Frenz, Helmut. Archivmaterialien Zu Helmut Frenz, 1933-2011.

MLA (9th ed.) Citation

Frenz, Helmut. Archivmaterialien Zu Helmut Frenz, 1933-2011.

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