1. Anderson, Martin. 1989. “Pollution.” The Christian Science Monitor (January). Reprinted in Block, ed. 1990.
2. Anderson, Terry L., and Donald R. Leal. 1991. Free Market Environmentalism. San Francisco: Pacific Research Institute.
3. Block, Walter. 1979. “Free Market Transportation: Denationalizing the Roads.” Journal of Libertarian Studies 3(2): 209–38.
4. Block, Walter. 1980. “Congestion and Road Pricing.” Journal of Libertarian Studies 4(3): 299–330.
5. Block, Walter. 1983a. “Public Goods and Externalities: The Case of Roads.” Journal of Libertarian Studies 7(1): 1–34.