Poh, Swee Hiang, and Md Sidin Ahmad Ishak. “The Business Model of Trade EBooks from Consumer Viewpoint: A Conceptual Framework”. Jurnal Pengajian Media Malaysia 18, no. 2 (December 1, 2016): 55–69. Accessed February 28, 2026. https://jupidi.um.edu.my/index.php/JPMM/article/view/5713.