Mahdzan, N. S., M. . Mokhtar, A. . M. Nayan, and M. R. . . Idris. “The Determinants of User Satisfaction Of Engineering Maintenance System (Emesys) In The Malaysian Army”. Advances in Business Research International Journal, vol. 7, no. 1, May 2021, pp. 225-41, https://journal.uitm.edu.my/ojs/index.php/Abrij/article/view/4135.