Dębska-Kossakowska, Aleksandra. “The Code of Ethics of Konstanty A. Jeleński - the Art Critic and Politician”. Sensus Historiae 40, no. 3 (June 15, 2020): 113–128. Accessed July 13, 2026. https://pressto.amu.edu.pl/index.php/sh/article/view/53855.