Eng Tek, Ong, and Johairi Abdul Rahim. “Mastery Level of Integrated Science Process Skills (PES) Among the Form 2 Students in Temerloh (80 - 99)”. Jurnal Pendidikan Bitara UPSI 3, no. 1 (May 13, 2019): 80–99. Accessed May 2, 2024. https://ojs.upsi.edu.my/index.php/JPB/article/view/2394.