Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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