1. Roderick Chisholm ; see his Theory of Knowledge, 2nd edition (Englewood Cliffs, N.J.: Prentice-Hall, 1977)
2. William P. Alston, ‘Varieties of Privileged Access,’ American Philosophical Quarterly 8 (1971), pp. 223–41
3. WPilliam Alston, ‘Two Types of Founddationalism,’ Journal of Philosophy 73 (1976), pp. 165–85
4. Anthony Quinton, ‘The Foundations of Knowledge,’ in British Analytical Philosophy, ed. Bernard Williams and Alan Montefiore (London: Routledge & Kegan Paul, 1966)
5. Anthony Quinton, The nature of Things (London: Routledgge & Kegan Paul, 1973)