Knapp, H. (2017). Introductory statistics using SPSS (Second edition.). Sage.
Chicago Edition CitationKnapp, Herschel. Introductory Statistics Using SPSS. Second edition. Los Angeles: Sage, 2017.
Deismireacht MLAKnapp, Herschel. Introductory Statistics Using SPSS. Second edition. Sage, 2017.
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