Norušis, M. J. (1988). SPSS/PC+ studentware. SPSS Inc..
Citación estilo ChicagoNorušis, Marija J. SPSS/PC+ Studentware. Chicago, IL: SPSS Inc., 1988.
Cita MLANorušis, Marija J. SPSS/PC+ Studentware. SPSS Inc., 1988.
Warning: These citations may not always be 100% accurate.