• J. Descortes and R.J. Teske (trans.), Henry of Ghent: Questions on God’s Existence and Essence (Leuven: 2005).

• A.B. Wolter (trans.), Duns Scotus: Philosophical Writings (Indianapolis: 1987)

• R. Cross, Duns Scotus (New York: 1999).

• R. Cross, “Duns Scotus on Essence and Existence,” Oxford Studies in Medieval Philosophy 1 (2013), 172-204.

• A.J. O’Brien, “Duns Scotus’ Teaching on the Distinction Between Essence and Existence,” New Scholasticism 38 (1964), 61-77.

• J. Paulus, “Les Disputes d’Henri de Gand et Gilles de Rome sur la distinction de l’essence et de l’existence,” Archives d’Histoire Doctrinale et Littéraire du Moyen Âge 13 (1942), 323-58.

• J.F. Wippel, “Godfrey of Fontaines and the Real Distinction between Essence and Existence,” Traditio 20 (1964), 385-410.

• T. Williams (ed.), The Cambridge Companion to Duns Scotus (Cambridge: 2003).

• B. Wolter, Scotus and Ockham: Selected Essays (St. Bonaventure NY: 2003).­

Stanford Encyclopedia: Medieval theories of analogy

Stanford Encyclopedia: Duns Scotus