Training of police personnel in Ukraine in 1930–1941. Bulletin of Kharkiv National University of Internal Affairs, [S. l.], v. 77, n. 2, p. 245–252, 2018. Disponível em: https://visnyk.univd.edu.ua/index.php/VNUAF/article/view/87. Acesso em: 17 sep. 2025.