APA (7th ed.) Citation

Feil, O., & Winkeler, L. (1950). Leo Winkeler.

Chicago Style (17th ed.) Citation

Feil, Otto, and Leo Winkeler. Leo Winkeler. [S. l, 1950.

MLA (9th ed.) Citation

Feil, Otto, and Leo Winkeler. Leo Winkeler. 1950.

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