Abdullah, Norazilawati, et al. “Penilaian Pelaksanaan Pentaksiran Berasaskan Sekolah (PBS) Dalam Kalangan Guru Sains: Evaluation of School Based Assessment (PBS) Among Science Teachers”. Jurnal Pendidikan Sains Dan Matematik Malaysia, vol. 5, no. 1, May 2015, pp. 89-102, https://ejournal.upsi.edu.my/index.php/JPSMM/article/view/2145.