Purwanto, J. ., Gunawan, G. and Kusuma, J. W. . (2023) “IMPROVING PERSONAL RESILIENCE AND STUDENT LEARNING ACHIEVEMENT THROUGH PROBLEM-BASED INSTRUCTION LEARNING”, International Journal of Economy, Education and Entrepreneurship (IJE3), 3(1), pp. 200–206. doi: 10.53067/ije3.v3i1.135.