Fisher, L. (1972). President and Congress: Power and policy. Free Press.
Cita Chicago (17th ed.)Fisher, Louis. President and Congress: Power and Policy. New York: Free Press, 1972.
Cita MLA (9th ed.)Fisher, Louis. President and Congress: Power and Policy. Free Press, 1972.
Atenció: Aquestes cites poden no estar 100% correctes.