A. M.Ariffin, A. S.Sobihatun Nur, A. Mazida, M. Massudi, and S. Y.Sharifah Nadiya, “Assistive Video or Assistive Courseware: What Hearing-impaired Learners Say?”, IJET, vol. 7, no. 3.20, pp. 279–283, Sep. 2018, doi: 10.14419/ijet.v7i3.20.19166.