You Eng, Chieng, and Tan Choon Keong. “Pengetahuan Teknologi Pedagogi Kandungan Di Malaysia: Satu Kajian Meta Analisis: Pedagogical Technological Content Knowledge in Malaysia: A Meta-Analysis Study”. Journal of ICT in Education, vol. 6, Sept. 2019, pp. 86-95, https://doi.org/10.37134/jictie.vol6.8.2019.