APA (7th ed.) Citation

Helfrich, H. Archivmaterialien zu Hede Helfrich, 1944-.

Chicago Style (17th ed.) Citation

Helfrich, Hede. Archivmaterialien Zu Hede Helfrich, 1944-.

MLA (9th ed.) Citation

Helfrich, Hede. Archivmaterialien Zu Hede Helfrich, 1944-.

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