APA (7th ed.) Citation

Helle, H. J. Archivmaterialien zu Horst Jürgen Helle, 1934-.

Chicago Style (17th ed.) Citation

Helle, Horst Jürgen. Archivmaterialien Zu Horst Jürgen Helle, 1934-.

MLA (9th ed.) Citation

Helle, Horst Jürgen. Archivmaterialien Zu Horst Jürgen Helle, 1934-.

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