Petrenko, Oksana. “MORAL EDUCATION IN CORRECTIONAL INSTITUTIONS OF UKRAINE IN THE 20-30s OF THE XX CENTURY: HISTORICAL AND PEDAGOGICAL REFLECTION”. Mountain School of Ukrainian Carpaty, no. 30 (June 20, 2024): 56–61. Accessed February 23, 2025. https://ktipe.pnu.edu.ua/index.php/msuc/article/view/8832.