1. Aristotle, Posterior analytics (R. McKeon Ed.; G. R. G. Mure, Trans.). The basic works of Aristotle. New York: Random House (1941).
2. Aristotle, The complete works of Aristotle: The revised English translation in two volumes (J. Barnes, Ed.). Princeton: Princeton University Press (1984).
3. Bernays, P. (1935). Sur le platonisme dans les mathématiques. L’Enseignement Mathématique, 34, 52–69. (English translation in Paul Benacerraf and Hilary Putnam, editors, Philosophy of Mathematics: Selected Readings. Cambridge: Cambridge University Press, 1983).
4. Blanchette, P. A. (to appear). Axioms in Frege (M. Rossberg & P. Ebert, Eds.). Essays on Frege’s basic laws of arithmetic. Oxford: Oxford University Press.
5. Blanchette, P. A. The Frege–Hilbert controversy (E. N. Zalta, Ed.), Stanford encyclopedia of philosophy, online, section 4. First posted in 2007; substantially revised on August 9, 2018.