Cronk, B. C. (2020). How to use SPSS(R): A step-by-step guide to analysis and interpretation. Routledge.
Lua i Stíl Chicago (17ú heag.)Cronk, Brian C. How to Use SPSS(R): A Step-by-step Guide to Analysis and Interpretation. London: Routledge, 2020.
Lua MLA (8ú heag.)Cronk, Brian C. How to Use SPSS(R): A Step-by-step Guide to Analysis and Interpretation. Routledge, 2020.
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