APA (7th ed.) Citation

Helmhold, H. Archivmaterialien zu Heidi Helmhold.

Chicago Style (17th ed.) Citation

Helmhold, Heidi. Archivmaterialien Zu Heidi Helmhold.

MLA (9th ed.) Citation

Helmhold, Heidi. Archivmaterialien Zu Heidi Helmhold.

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