APA (7th ed.) Citation

Heyer, G. R. Archivmaterialien zu Gustav Richard Heyer, 1890-1967.

Chicago Style (17th ed.) Citation

Heyer, Gustav Richard. Archivmaterialien Zu Gustav Richard Heyer, 1890-1967.

MLA (9th ed.) Citation

Heyer, Gustav Richard. Archivmaterialien Zu Gustav Richard Heyer, 1890-1967.

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