B. Y. P. . Sakti, S. . Urbayatun, and C. . Prabawanti, “The Role of Self-Efficacy and Optimism on Academic Stress Towards Industrial Engineering Students at Universitas Ahmad Dahlan, Yogyakarta Batch 2017-2019”, IJSBAR, vol. 53, no. 1, pp. 35–42, Jul. 2020.