APA (7th ed.) Citation

Lützeler, H. (1954). Philosophie des Kölner Humors. Peters.

Chicago Style (17th ed.) Citation

Lützeler, Heinrich. Philosophie Des Kölner Humors. Honnef: Peters, 1954.

MLA (9th ed.) Citation

Lützeler, Heinrich. Philosophie Des Kölner Humors. Peters, 1954.

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