Moh, E., and A. Abd Shukor. “EFFECTS OF STRUCTURED KNOWLEDGE MODEL CONSTRUCTS (KPB) UNDERSTANDING THE CONCEPT OF BIOLOGY STUDENT FORM 4 (34 - 42)”. Jurnal Pendidikan Bitara UPSI, vol. 6, no. 1, May 2019, pp. 34-42, https://ojs.upsi.edu.my/index.php/JPB/article/view/2422.