(2003). SPSS® student version 11.0 for Windows. Chicago, Ill: John Wiley and Sons.
Trích dẫn kiểu ChicagoSPSS® Student Version 11.0 for Windows. Chicago, Ill: John Wiley and Sons, 2003.
Deismireacht MLASPSS® Student Version 11.0 for Windows. Chicago, Ill: John Wiley and Sons, 2003.
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