Le, D., Nguyen, L., Pham, H., & Co, L. (2018). IMPACT OF HARDINESS ON LEARNING OUTCOME, QUALITY OF LIFE, QUALITY OF UNIVERSITY LIFE ON ECONOMIC SECTOR STUDENTS IN TRA VINH UNIVERSITY. TRA VINH UNIVERSITY JOURNAL OF SCIENCE, 8(32), 1-11. https://doi.org/10.35382/18594816.1.32.2018.53