1. Campbell, Tom. 2006. Rights: A critical introduction. London/New York: Routledge.
2. Dimensions of philosophy series;Jean Hampton,1997
3. Hohfeld, Wesley. 1964. Fundamental legal conceptions. New Haven: Yale University Press. (The two papers in this volume first appeared as articles in the Yale Law Journal, one in 1913, the other in 1917. Reprinted in a single volume, under the foregoing title, they appeared in 1919 and were republished in 1923 and 1964.)
4. Jessop, T.E. 1960. Thomas Hobbes. London: Longmans Green.
5. Martin, Rex. 1980. Hobbes and the doctrine of natural rights: The place of consent in his political philosophy. Western Political Quarterly 33(3): 380–392.