Ehrenberg, A. S. C. (1981). Data reduction: Analysing and interpreting statistical data (Rev. repr.). John Wiley & Sons.
Cita Chicago Style (17a ed.)Ehrenberg, Andrew S. C. Data Reduction: Analysing and Interpreting Statistical Data. Rev. repr. Chichester [etc.]: John Wiley & Sons, 1981.
Cita MLA (9a ed.)Ehrenberg, Andrew S. C. Data Reduction: Analysing and Interpreting Statistical Data. Rev. repr. John Wiley & Sons, 1981.
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