Norma Kroll, "The Democritean Universe In Webster's "The White Devil"" Comparative Drama Vol. 7, No. 1 (Spring 1973), pp. 3-21 https://www.jstor.org/stable/41152599
worldcat.org
Webster, John (1960). Russell Brown, John (ed.). The White Devil. London: Methuen. p. 4. OCLC317509591.