Ablewicz, Krystyna. “Necessary and Needless Loneliness. The Perspective of Fact, Development and Relation - a Case Study of Texts by Janusz Korczak”. HORIZONS OF EDUCATION 19, no. 50 (July 21, 2020): 77-91. Accessed December 5, 2025. https://horyzontywychowania.ignatianum.edu.pl/HW/article/view/1928.