APA (7th ed.) Citation

Apel, P. Archivmaterialien zu Paul Apel, 1872-1946.

Chicago Style (17th ed.) Citation

Apel, Paul. Archivmaterialien Zu Paul Apel, 1872-1946.

MLA (9th ed.) Citation

Apel, Paul. Archivmaterialien Zu Paul Apel, 1872-1946.

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