Busdayu, Z. A., Rahmawati, N. ., & Setiadi, D. . (2023). Penerapan Model Pembelajaran Problem Based Learning dalam Meningkatkan Keterampilan Berpikir Tingkat Tinggi (HOTS). Journal of Classroom Action Research, 5(4), 449–453. https://doi.org/10.29303/jcar.v5i4.5537