Binti Jalaluddin, Siti Norafizan, and Che Nidzam Binti Che Ahmad. “Model Struktural Pembelajaran Biologi: A Structural Model of Biology Learning”.
Journal of Science and Mathematics Letters, vol. 4, Dec. 2016, pp. 63-70,
https://ejournal.upsi.edu.my/index.php/JSML/article/view/425.