- Comparative Constitutional Traditions (Teaching Texts in Law and Politics, Vol. 27)
- Ex Uno Plura: State Constitutions and Their Political Cultures (Suny Series in American Constitutionalism)
- The Essential Concept of Law (Teaching Texts in Law and Politics, V. 33)
- Toward a North American Legal System
- Diplomats Without a Country: Baltic Diplomacy, International Law, and the Cold War (Contributions to the Study of World History)