Simpson, Thomas M. “Israel Scheffler, Conditions of Knowledge (An Introduction to Epistemology and Education)”. Crítica. Revista Hispanoamericana de Filosofía 2, no. 5 (May 6, 1968): 103–112. Accessed December 14, 2024. https://critica.filosoficas.unam.mx/index.php/critica/article/view/47.