Ian Budge. (2001). Mapping policy preferences: Estimates for parties, electors, and governments, 1945-1998. Oxford ; New York: Oxford University Press.
Trích dẫn kiểu ChicagoIan Budge. Mapping Policy Preferences: Estimates for Parties, Electors, and Governments, 1945-1998. Oxford ; New York: Oxford University Press, 2001.
MLA CitationIan Budge. Mapping Policy Preferences: Estimates for Parties, Electors, and Governments, 1945-1998. Oxford ; New York: Oxford University Press, 2001.
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