Custom and Reason in Hume: A Kantian Reading of the First Book of the Treatise. : Oxford University Press, 2008-08-07. Oxford Scholarship Online. 2008-09-01. Date Accessed 25 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199532889.001.0001/acprof-9780199532889>.
(2008-08-07). Custom and Reason in Hume: A Kantian Reading of the First Book of the Treatise. : Oxford University Press. Retrieved 25 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199532889.001.0001/acprof-9780199532889.
Custom and Reason in Hume: A Kantian Reading of the First Book of the Treatise. : Oxford University Press, 2008-08-07. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199532889.001.0001/acprof-9780199532889.
Allison HE. Custom and Reason in Hume: A Kantian Reading of the First Book of the Treatise. Oxford University Press; 2008. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199532889.001.0001/acprof-9780199532889. Accessed May 25, 2013.