Norusis, M. J. (2000). SPSS 13.0 guide to data analysis. Prentice Hall.
Tohutoru Kātū Chicago (17th ed.)Norusis, M. J. SPSS 13.0 Guide to Data Analysis. Upper Saddle River, N.J.: Prentice Hall, 2000.
Tohutoro MLA (9th ed.)Norusis, M. J. SPSS 13.0 Guide to Data Analysis. Prentice Hall, 2000.
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