DAVIDOVIĆ, Dušan. European Model of Private Security. Zbornik Instituta za kriminološka i sociološka istraživanja, Belgrade, Serbia, v. 33, n. 2, p. 177–187, 2014. Disponível em: https://zbornik-iksi.rs/index.php/home/article/view/238. Acesso em: 4 apr. 2026.