Sele, Yunawati. “Optimizing the Potential of Children Learning in Science (clis) With Brain Gym: Review on Human Circulatory Concepts”. Biosfer: Jurnal Pendidikan Biologi 12, no. 2 (November 19, 2019): 238–248. Accessed November 22, 2024. https://journal.unj.ac.id/unj/index.php/biosfer/article/view/11864.