Ng, Perng Jeu, and Mariam Mohamad. 2019. “Effects of Redundancy and Modality Principle in Multimedia Learning: Concentration on Motivation and Gender DIfferences Among Primary School Students”.
Journal of ICT in Education 1 (June): 42-53.
https://ejournal.upsi.edu.my/index.php/JICTIE/article/view/2590.