Chaim, Władysław. “ Paderborn 2003: Verlag Ferdinand Schoeningh”. Studia Psychologica: Theoria et praxis, no. 7 (August 24, 2007): 435–453. Accessed April 24, 2025. https://czasopisma.uksw.edu.pl/index.php/sp/article/view/2676.