Cox, G. W. 1., Fiorina, M. P., Jacobson, G. C., Kernell, S., McCubbins, M. D. 1., Petrocik, J. R., . . . Wattenberg, M. P. 1. (1991). The politics of divided government. Boulder, Colorado: Westview Press.

Cox, Gary W. 1955-, Morris P. Fiorina, Gary C. Jacobson, Samuel Kernell, Mathew Daniel 1956- McCubbins, John R. Petrocik, Charles H. Stewart, and Martin P. 1956- Wattenberg. The Politics of Divided Government. Boulder, Colorado: Westview Press, 1991.

Cox, Gary W. 1955-, et al. The Politics of Divided Government. Boulder, Colorado: Westview Press, 1991.