1. Tamanaha, Brian Z. (1997), Realistic Socio-Legal Theory: Pragmatism and a Social Theory of Law (Oxford: Clarendon Press)
2. Snee, Joseph M. (1956), “Leviathan at the Bar of Justice,” in Arthur E. Sutherland, ed. Government Under Law (Cambridge, Mass.: Harvard Univ. Press)
3. Smith, Adam. (1978), Lectures on Jurisprudence. R. L. Meek, D. D. Raphael, and P. G. Stein, eds. (Oxford: Clarendon Press)
4. Theoretical Foundations of Liberalism;Waldron;Philosophical Quarterly,1987
5. Ulrich, Karpen. (1988), “Rule of Law,” The Constitution of the Federal Republic of Germany (Baden-Baden: Nomos Verlagsgesellschaft)