Gangs of juvenile delinquents: wyniki badań 255 grup. Archives of Criminology, [S. l.], n. I, p. 113–163, 1960. DOI: 10.7420/AK1960C. Disponível em: https://czasopisma.inp.pan.pl/index.php/ak/article/view/472. Acesso em: 29 oct. 2025.