1. Anderson, Paul N. Christology of the Fourth Gospel: Its Unity and Disunity in the Light of John 6. Tübingen: J.C.B. Mohr (Paul Siebeck), 1996 (in English).
2. Ashton, John. Understanding the Fourth Gospel. 2nd ed. Oxford: Oxford University Press, 2007 (in English).
3. Baldensperger, Wilhelm. Der Prolog des vierten Evangeliums. Sein polemisch-apologetischer Zweck. Freiburg i. B. [et al.]: J.C.B. Mohr, 1898 (in German).
4. Barrett, Charles Kingsley. The Prologue of St John’s Gospel. London: The Athlone Press, 1971 (in English).
5. Barrett, Charles Kingsley. K. The Gospel according to St. John. An Introduction with Commentary and Notes on the Greek Text. 2nd ed. Philadelphia: Westminster Press, 1978 (in English).