P. López Barja de Quiroga, „K. R. Bradlely, Slavery and Rebellion in the Roman world, 140 b.C.-70 b.C. Londres, B. T. Batsford e Indiana (University Press), 1989, XIII + 186pp“., Gerión, Bd. 9, S. 322, Jan. 1991, Zugegriffen: Juli 15, 2026. Verfügbar unter: https://revistas.ucm.es/index.php/GERI/article/view/GERI9191120322B