Fitria, Trianda, and Tahrun Tahrun. 2021. “Improving Students’ Critical Thinking Skills through Project-Based Learning (PBL) in General English for Pre Intermediate 4 Class in LB LIA Palembang: A Classroom Action Research ”. Jurnal Pendidikan Tambusai 5 (2):4907-10. https://doi.org/10.31004/jptam.v5i2.1724.