Kvanvig, Jonathan L. "Reservations about the Underlying Logic." The Knowability Paradox. : Oxford University Press, 2006-02-09. Oxford Scholarship Online. 2006-05-01. Date Accessed 20 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/0199282595.001.0001/acprof-9780199282593-chapter-6>.
Kvanvig, J.(2006-02-09). Reservations about the Underlying Logic. In The Knowability Paradox. : Oxford University Press. Retrieved 20 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/0199282595.001.0001/acprof-9780199282593-chapter-6.
Kvanvig, Jonathan L. "Reservations about the Underlying Logic." In The Knowability Paradox. : Oxford University Press, 2006-02-09. http://www.oxfordscholarship.com/view/10.1093/0199282595.001.0001/acprof-9780199282593-chapter-6.
Kvanvig JL. Reservations about the Underlying Logic. In: Kvanvig JL. The Knowability Paradox. Oxford University Press; 2006. http://www.oxfordscholarship.com/view/10.1093/0199282595.001.0001/acprof-9780199282593-chapter-6. Accessed May 20, 2013.