Alexander, T. B. (1967). Sectional stress and party strength; a study of roll-call voting pattern in the United States House of Representatives,1836-1860. Vanderbilt University Press.
Cita Chicago (17th ed.)Alexander, Thomas Benjamin. Sectional Stress and Party Strength; a Study of Roll-call Voting Pattern in the United States House of Representatives,1836-1860. Nashville: Vanderbilt University Press, 1967.
Cita MLA (9th ed.)Alexander, Thomas Benjamin. Sectional Stress and Party Strength; a Study of Roll-call Voting Pattern in the United States House of Representatives,1836-1860. Vanderbilt University Press, 1967.
Atenció: Aquestes cites poden no estar 100% correctes.