Ubaidullah, N.H. and Zaman, H.B. 2019. Aspek-aspek Pedagogi dalam Perisian Kursus Multimedia (D-Matematika) bagi Kanak-kanak Disleksia: Pedagogical Aspects in Multimedia Courseware (D-Matematika) for Dyslexic Children. Journal of Science and Mathematics Letters. 3, 2 (Jan. 2019), 42–58.