1. Armour-Garb, B., & Woodbridge, J. (2015). Pretense and pathology: Philosophical fictionalism and its applications. Cambridge: Cambridge University Press.
2. Bergmann, G. (1947c). Undefined descriptive predicates. Philosophy and Phenomenological Research, 8, 55–82.
3. Ducasse, C. (1941). Philosophy as a science: Its matter and method. New York: Veritas Press.
4. Hatfield, G. (2015). Radical empiricism, critical realism, and American functionalism: James and Sellars. HOPOS: The Journal for the International Society for the History of the Philosophy of Science, 5, 129–153.
5. Kraut, R. (2010). Universals, metaphysical explanations, and pragmatism. The Journal of Philosophy, 107, 590–609.