Rizky, Hanifia, Dalia Sukmawati, and R Rusdi. “Excretory System Learning: What Is the Relationship Between Critical Thinking Skills and Biology Learning Motivation?”. Biosfer: Jurnal Pendidikan Biologi 13, no. 2 (October 22, 2020): 320-332. Accessed April 26, 2024. https://journal.unj.ac.id/unj/index.php/biosfer/article/view/15459.