1. Christopher Arroyo, Kant and Husserl on Moral Obligation and Emotions (Ph.D. diss., Fordham University, 2007).
2. Franz Brentano, The Origin of the Knowledge of Right and Wrong, trans. C. Hague (Westminster: A. Constable and Co., Ltd. 1902).
3. Franz Brentano, Psychology from an Empirical Standpoint, trans. A. C. Rancurello, D. B. Terrell, and L. L. McAlister (2nd ed., London: Routledge & Kegan Paul, 1995).
4. John J. Drummond, “Aristotelianism and Phenomenology,” in Phenomenological Approaches to Moral Philosophy, ed. John J. Drummond and Lester Embree (Dordrecht: Kluwer Academic Publishers, 2002), pp. 15–45.
5. John J. Drummond, “Moral Objectivity: Husserl’s Sentiments of the Understanding,” in Husserl Studies 12 (1995), pp. 165–183 (reprinted in Edmund Husserl: Critical Assessments of Leading Philosophers, ed. Rudolf Bernet, DonnWelton, and Gina Zavota, 5 vols.,New York: Routledge, 2005), vol. 5, pp. 80–98).