Putri, Febby Ayuni Esya, Syaiful Syaiful, and Jodion Siburian. “Student’s Critical Thinking Skill on Online Inquiry Learning and Problem Based Learning (PBL)”. Edumatica : Jurnal Pendidikan Matematika 11, no. 01 (April 29, 2021): 84-92. Accessed April 16, 2024. https://online-journal.unja.ac.id/edumatica/article/view/11458.