Jensen, R. (1978). Party coalitions in America: 1820's to 1970's. Notre Dame, Ind..
Lua i Stíl Chicago (17ú heag.)Jensen, Richard. Party Coalitions in America: 1820's to 1970's. Notre Dame, Ind., 1978.
Lua MLA (8ú heag.)Jensen, Richard. Party Coalitions in America: 1820's to 1970's. Notre Dame, Ind., 1978.
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