Pontarollo, N. i Ricciuti, R. (2019) „Mafia Murders in Palermo (1909-1992)“, Journal of Regional Security, 14(1), str. 25–28. Dostupno na: https://asistent.ceon.rs/index.php/jouregsec/article/view/22805 (Pristupljeno: 12 Juli 2026).