M. H. Abdul Rahman, D. N. Eh Phon, N. I. Utama, N. Yahaya, N. D. Abd Halim, and S. Kasim, “Sense of Presence and Learning Satisfaction among Students of Different Age Groups in a 3-D Virtual World”, Int. J. Adv. Sci. Eng. Inf. Technol., vol. 9, no. 2, pp. 711–716, Mar. 2019.