Mitha Gita Isvida et al. 2024. The Effect of Problem-Based Learning Integrated with Ethnoscience on Critical Thinking Skills in SMA Negeri 01 Kubu. Quagga: Jurnal Pendidikan dan Biologi. 16, 1 (Jan. 2024), 51–57. DOI:https://doi.org/10.25134/quagga.v16i1.54.