1. William of Sherwood (1968). Treatise on Syncategorematic Words, trans. N. Kretzmann . Minneapolis: University of Minnesota Press.
2. Wells, N. J. (1981). ‘Suarez on the Eternal Truths’, The Modern Schoolman. 58:.
3. Vogel, C. J. de (1963). ‘The Concept of Personality in Greek and Christian Thought’, Studies in Philosophy and the History of Philosophy. 2:.
4. Zimara, Marcantonio (1562). Solutiones contradictionum in dictis Aristotelis, et Averrois super libros Physicorum, in Averroes 1562–74, vol. 4.
5. Yost, R. M. (1990). ‘Locke’s Rejection of Hypotheses about Sub-microscopic Events’, in John Yolton (ed.), Philosophy, Religion and Science in the Seventeenth and Eighteenth Centuries (Library of the History of Ideas). Rochester, N.Y.: University of Rochester Press.