Tufte, E. R. (1974). Data analysis for politics and policy. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Tufte, Edward R. Data Analysis for Politics and Policy. Englewood Cliffs: Prentice-Hall, 1974.
Lua MLA (9ú heag.)Tufte, Edward R. Data Analysis for Politics and Policy. Prentice-Hall, 1974.
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