Hall, R. E., & Rabushka, A. (2007). The flat tax (2nd ed.). Hoover Institution Press.

Hall, Robert E., and Alvin Rabushka. The Flat Tax. 2nd ed. Stanford, CA: Hoover Institution Press, 2007.

Hall, Robert E., and Alvin Rabushka. The Flat Tax. 2nd ed. Hoover Institution Press, 2007.