Wagner, W. . E. (2010). Using SPSS for social statistics and research methods (2nd ed.). Pine Forge Press.
Chicago-viite (17. p.)Wagner, William E. Using SPSS for Social Statistics and Research Methods. 2nd ed. Thousand Oaks, Calif: Pine Forge Press, 2010.
MLA-viite (9. p.)Wagner, William E. Using SPSS for Social Statistics and Research Methods. 2nd ed. Pine Forge Press, 2010.
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