Berkman, E. T. (2012). A Conceptual Guide to Statistics Using SPSS. Sage.
Tohutoru Kātū Chicago (17th ed.)Berkman, Elliot T. A Conceptual Guide to Statistics Using SPSS. London: Sage, 2012.
Tohutoro MLA (9th ed.)Berkman, Elliot T. A Conceptual Guide to Statistics Using SPSS. Sage, 2012.
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