Moral Philosophy: A Reader, 2nd Ed. (Hackett Publishing)
The Philosophy of Nature of St. Thomas Aquinas : Nature, the Universe, Man
Ecstatic Transformation : Transpersonal Psychology in the Work of Mechthild of Magdeburg
Aquinas and the Jews (Middle Ages)
Medieval Thought: An Introduction
Mediaeval Isma'Ili History and Thought
Philosophy and Theology in the Middle Ages
The Mind of the Middle Ages, A.D. 200-1500 : An Historical Survey
Averroes and the Enlightenment
Ockham's Theory of Propositions : Part II of the Summa Logicae
St. Augustine in 90 Minutes (Philosophers in 90 Minutes)
Duns Scotus, Metaphysician (Purdue University Press Series in the History of Philosophy)
A Brief Introduction to Islamic Philosophy
The Cambridge Companion to Ockham (Cambridge Companions to Philosophy(Cloth))
Philosophy in Christian Antiquity
A History of Medieval Political Thought 300-1450
The Metaphysics of Creation : Aquinas's Natural Theology in Summa Contra Gentiles II
The Common Good in Late Medieval Political Thought