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