Thanatchaporn Ngamsuk และผู้แต่งคนอื่นๆ. (2020) Comparisons of Using Computer Statistical Software(Packages):SPSS, MINITAB, PSPP, and R for Nonparametric Statistics. <i>Thai Journal of Science and Technology</i>, <i>9</i>(6), 741-751.Thanatchaporn Ngamsuk และผู้แต่งคนอื่นๆ. "Comparisons of Using Computer Statistical Software(Packages):SPSS, MINITAB, PSPP, and R for Nonparametric Statistics". Thai Journal of Science and Technology 9 (2020):741-751.Thanatchaporn Ngamsuk และผู้แต่งคนอื่นๆ. Comparisons of Using Computer Statistical Software(Packages):SPSS, MINITAB, PSPP, and R for Nonparametric Statistics. Thammasat University:ม.ป.ท. 2020.