Torretti, R. (2016). Kurt Gödel. Collected works. Vol. IV, Correspondence A-G; V, Correspondence H-Z. Edited by Solomon Feferman, John W. Dawson Jr., Warren Goldgfarb, Charles Parsons, Wilfried Sieg. Oxford: Claredon Press, 2003. Revista De Filosofía, 60, Pág. 169–172. Recuperado a partir de https://revistafilosofia.uchile.cl/index.php/RDF/article/view/43608