Zeidler, Włodzisław. “Kurt Lewin (1890–1947) – in the Eyes of His Biographers”. Studia Psychologica: Theoria et praxis 21, no. 1 (August 4, 2021): 31–47. Accessed April 25, 2025. https://czasopisma.uksw.edu.pl/index.php/sp/article/view/8956.