1. Aldrich, John H., Gary J. Miller, Charles W. Ostrom, Jr., And David W. Rohde (1986).American Government: People, Institutions, and Policies. Boston: Houghton Mifflin.
2. Arney, William Ray, and William H. Tresscher (1976). Trends in attitudes toward abortion, 1972?1975.Family Planning Perspectives 8: 117?124.
3. Berry, Jeffrey M. (1977).Lobbying for the People: The Political Behavior of Public Interest Groups. Princeton, NJ: Princeton University Press.
4. Brody, Richard A. (1991).Assessing the President: The Media, Elite Opinion, and Public Support. Stanford: Stanford University Press.
5. Blake, Judith (1971). Abortion and public opinion: the 1960?1970 decade.Science 171: 540?549.