Sumittra Muangkhoua. (2017) Test Analysis with Classical Test Theory (CTT): Finding the Item Difficulty and Item Discrimination using by SPSS Program. <i>Vajira Medical Journal</i>, <i>61</i>(4), 311-328.Sumittra Muangkhoua. "Test Analysis with Classical Test Theory (CTT): Finding the Item Difficulty and Item Discrimination using by SPSS Program". Vajira Medical Journal 61 (2017):311-328.Sumittra Muangkhoua. Test Analysis with Classical Test Theory (CTT): Finding the Item Difficulty and Item Discrimination using by SPSS Program. Text and Journal Publication:ม.ป.ท. 2017.