Libertarian Accounts of Free Will. : Oxford University Press, 2003-10-30. Oxford Scholarship Online. 2005-01-20. Date Accessed 20 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/019515987X.001.0001/acprof-9780195159875>.
(2003-10-30). Libertarian Accounts of Free Will. : Oxford University Press. Retrieved 20 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/019515987X.001.0001/acprof-9780195159875.
Libertarian Accounts of Free Will. : Oxford University Press, 2003-10-30. http://www.oxfordscholarship.com/view/10.1093/019515987X.001.0001/acprof-9780195159875.
Clarke R. Libertarian Accounts of Free Will. Oxford University Press; 2003. http://www.oxfordscholarship.com/view/10.1093/019515987X.001.0001/acprof-9780195159875. Accessed May 20, 2013.