A Theory of Political Obligation: Membership, Commitment, and the Bonds of Society. : Oxford University Press, 2006-05-11. Oxford Scholarship Online. 2006-09-01. Date Accessed 20 Jun. 2013 <http://www.oxfordscholarship.com/view/10.1093/0199274959.001.0001/acprof-9780199274956>.
(2006-05-11). A Theory of Political Obligation: Membership, Commitment, and the Bonds of Society. : Oxford University Press. Retrieved 20 Jun. 2013, from http://www.oxfordscholarship.com/view/10.1093/0199274959.001.0001/acprof-9780199274956.
A Theory of Political Obligation: Membership, Commitment, and the Bonds of Society. : Oxford University Press, 2006-05-11. http://www.oxfordscholarship.com/view/10.1093/0199274959.001.0001/acprof-9780199274956.
Gilbert M. A Theory of Political Obligation: Membership, Commitment, and the Bonds of Society. Oxford University Press; 2006. http://www.oxfordscholarship.com/view/10.1093/0199274959.001.0001/acprof-9780199274956. Accessed June 20, 2013.