Copleston, F(rederick) C(harles). 1972. A History of Medieval Philosophy. New York: Harper & Row.
Covington, Michael A(aron). (To appear.) Syntactic Theory in the High Middle Ages. Cambridge: Cambridge Univ. Press.
Gilson, Étienne (Henry). 1955. History of Christian Philosophy the Middle Ages. New York: Random House.
Pinborg, Jan. 1967. Die Entwicklung der Sprachtheorie im Mittelalter. (= Beiträge zur Geschichte der Philosophie und Theologie des Mittelalters, 42:4.) Münster: Aschendorff; Copenhagen: Arne Frost-Hansen.
Wulf, Maurice (Marie Charles Joseph) de. 1934–. Histoire de la philosophie médiévale. 31 vols. 6th ed. Louvain: Institut Supérieur de la Philosophie; Paris: J. Vrin.