Norusis, M. J. (1993). SPSS® for Windows TM: Professional statistics TM. Release 6.0. Chicago, Ill: SPSS Inc.
Trích dẫn kiểu ChicagoNorusis, Marija J. SPSS® for Windows TM: Professional Statistics TM. Release 6.0. Chicago, Ill: SPSS Inc, 1993.
MLA CitationNorusis, Marija J. SPSS® for Windows TM: Professional Statistics TM. Release 6.0. Chicago, Ill: SPSS Inc, 1993.
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