Nisachon Chomchay และผู้แต่งคนอื่นๆ. (2015) Effectiveness of the Visual Perceptual Intervention Program for grade 1-3 students with learning disabilities. <i>Journal of Associated Medical Sciences</i>, <i>48</i>(3), 222-230.Nisachon Chomchay และผู้แต่งคนอื่นๆ. "Effectiveness of the Visual Perceptual Intervention Program for grade 1-3 students with learning disabilities". Journal of Associated Medical Sciences 48 (2015):222-230.Nisachon Chomchay และผู้แต่งคนอื่นๆ. Effectiveness of the Visual Perceptual Intervention Program for grade 1-3 students with learning disabilities. Faculty of Associated Medical Sciences, Chiang Mai University:ม.ป.ท. 2015.