Oxford Handbook of Jurisprudence and the Philosophy of Law (with S. Shapiro), 2002.

The Practice of Principle, 2001

Hart’s Postscript, 2001

The Philosophy of Law (with J. Feinberg), 1999

In Harm’s Way (with A. Buchanan), 1995; Rational Commitment & Social Justice (with C. Morris), 1999

Outstanding Essays in Legal Philosophy, Volumes I-V, 1994

Risks and Wrongs, 1992

Economic Analysis of Law (with J. Lange), Vol. I and II, 1991

Markets, Morals and the Law, 1988

Philosophy and Law (with E. Paul), 1987

Philosophy of Law: An Introduction to Jurisprudence (with J. Murphy), 1984, 2nd ed., 1990