Ibrahim, W. K. W., N. Aziz, N. Zakaria, and M. M. Yunus. “Enhancing Speaking Skill Among Students in ESL Lesson through Instagram”. The International Journal of Humanities & Social Studies, vol. 6, no. 12, Dec. 2018, doi:10.24940/theijhss/2018/v6/i12/HS1812-063.