APA (7th ed.) Citation

Zellmann, K. Gute Umgangsformen (o.A.).

Chicago Style (17th ed.) Citation

Zellmann, Karl. Gute Umgangsformen. o.A. Jena.

MLA (8th ed.) Citation

Zellmann, Karl. Gute Umgangsformen. o.A.

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