Ulandari, L., & Surya, E. (2017). Improving Learning Outcomes of Linear Program with Quantum Teaching Model at Grade X Students SMK-BM PAB 3 Medan Estate. International Journal of Sciences: Basic and Applied Research (IJSBAR), 33(3), 120–129. Retrieved from https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/7478