APA (7th ed.) Citation

Helfferich, C. Archivmaterialien zu Cornelia Helfferich, 1951-2021.

Chicago Style (17th ed.) Citation

Helfferich, Cornelia. Archivmaterialien Zu Cornelia Helfferich, 1951-2021.

MLA (9th ed.) Citation

Helfferich, Cornelia. Archivmaterialien Zu Cornelia Helfferich, 1951-2021.

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