Taufiq, M. Aries. “The Grammar of Singapore English Used in Skype Conversation”. Jurnal Educative: Journal of Educational Studies 4, no. 2 (December 14, 2019): 107–120. Accessed November 22, 2025. https://ejournal.uinbukittinggi.ac.id/index.php/educative/article/view/2389.