CHRISTIÁN, L.; KARDOS, P. Varicoloured Civil Volunteer Security Activity: From New York City to the NUPS. Hungarian Law Enforcement, [S. l.], v. 19, n. 4, p. 33–51, 2019. DOI: 10.32577/mr.2019.4.2. Disponível em: https://folyoirat.ludovika.hu/index.php/magyrend/article/view/595. Acesso em: 19 may. 2024.