J. Rufus Fears(en), « The Cult of Virtues and Roman Imperial Ideology », Aufstieg und Niedergang der römischen Welt, II, 17, 2 (1981), p. 837.
Frontin, De aquaeductu(en) 1.19; Arnaldo Momigliano, "Religion in Athens, Rome, and Jerusalem in the First Century B.C.," dans On Pagans, Jews, and Christians (Wesleyan University Press, 1987), p. 75.