Ratu, A. K. ., Bano, V. O. ., & Ndjoeroemana, Y. . (2023). Application of the Problem Based Instruction (PBI) Learning Model to Improve Student Learning Outcomes at SMA N 1 Nggoa. Formosa Journal of Multidisciplinary Research, 2(5), 847–858. https://doi.org/10.55927/fjmr.v2i5.4123