APA (7th ed.) Citation

Knoll, F. (1931). Dr. Richard Wettstein ([Sonderdr.].).

Chicago Style (17th ed.) Citation

Knoll, Fritz. Dr. Richard Wettstein. [Sonderdr.]. 1931.

MLA (9th ed.) Citation

Knoll, Fritz. Dr. Richard Wettstein. [Sonderdr.]. 1931.

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