(1994). SPSS for Windows: SPSS base system for Windows. Chicago, IL: SPSS.
Trích dẫn kiểu ChicagoSPSS for Windows: SPSS Base System for Windows. Chicago, IL: SPSS, 1994.
MLA CitationSPSS for Windows: SPSS Base System for Windows. Chicago, IL: SPSS, 1994.
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