Mohamed Sunar, Mohd Shahir, and Ahmad Jelani Shaari. 2017. “Keberkesanan Kaedah PBL via Facebook Dalam Kalangan Pelajar Pra-Universiti: The Effectiveness of PBL via Facebook Methods Among Pre-University Students”. Jurnal Pendidikan Sains Dan Matematik Malaysia 7 (2):52-71. https://doi.org/10.37134/jpsmm.vol7.2.5.2017.