Levy, I. C. (2003). John Wyclif: Scriptural logic, real presence, and the parameters of orthodoxy. Marquette University Press.
Lua i Stíl Chicago (17ú heag.)Levy, Ian Christopher. John Wyclif: Scriptural Logic, Real Presence, and the Parameters of Orthodoxy. Milwaukee, Wis.: Marquette University Press, 2003.
Lua MLA (9ú heag.)Levy, Ian Christopher. John Wyclif: Scriptural Logic, Real Presence, and the Parameters of Orthodoxy. Marquette University Press, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.