1. Amy, D. J. (1993). Real choices, new voices: The case for proportional representation elections in the United States. New York, NY: Columbia University Press.
2. Amy, D. J. (1996). The forgotten history of the single transferable vote in the United States. Journal of Representative Democracy, 34(1), 13–20.
3. Anest, J. (2009). Ranked choice voting: A path toward a more integral politics. Journal of Integral Theory, 4(3), 23–40.
4. Barber, K. L. (1995). Proportional representation and electoral reform in Ohio. Columbus, OH: Ohio State University Press.
5. Barber, K. L. (2000). A right to representation: proportional election systems for the twenty-first century. Columbus, OH: Ohio State University Press.