Sirikit R, Choptham M, Mahalawalert P, Tagontong N, Apinyapibal S. An Investigation of Differential Item Functioning and Differential Test Functioning Of Swusat during 2010-2013. scho [Internet]. 2017Jan.16 [cited 2024Apr.29];8(2). Available from: http://www.assumptionjournal.au.edu/index.php/Scholar/article/view/2514