Lützeler, H. (1954). Philosophie des Kölner Humors (3.Aufl.). Peters.
Chicago Style (17th ed.) CitationLützeler, Heinrich. Philosophie Des Kölner Humors. 3.Aufl. Honnef: Peters, 1954.
MLA (9th ed.) CitationLützeler, Heinrich. Philosophie Des Kölner Humors. 3.Aufl. Peters, 1954.
Warning: These citations may not always be 100% accurate.