"Ethical Knowledge and Social Facts", The Concept of Knowledge, ed. by I. Kucuradi and R. S. Cohen, Boston: Kluwer Academic Publishers, pp. 119-126, 1995

"Ethical Knowledge and Social Facts", The Concept of Knowledge, ed. by I. Kucuradi and R. S. Cohen, Boston: Kluwer Academic Publishers, pp. 119-126, 1995, Box: 14, Folder: 62. Personal papers of Richard T. De George, PP 531. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/315468 Accessed March 04, 2026.