Kenney, D., & Hartley, R. E. (2012). The heroic and the notorious: U.S. Senators from Illinois (2nd ed.). Southern Illinois University Press.

Kenney, David, and Robert E. Hartley. The Heroic and the Notorious: U.S. Senators from Illinois. 2nd ed. Carbondale: Southern Illinois University Press, 2012.

Kenney, David, and Robert E. Hartley. The Heroic and the Notorious: U.S. Senators from Illinois. 2nd ed. Southern Illinois University Press, 2012.