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.
Lua i Stíl Chicago (17ú heag.)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.
Lua MLA (9ú heag.)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.
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