Renata, Renata Sekar Amaris, and Ferdinand Hindiarto. “Correlation Between Hardiness and Optimism on Government Employees With Work Agreement (PPPK)”. Humanitas (Jurnal Psikologi) 7, no. 3 (February 11, 2024): 333–342. Accessed December 12, 2024. http://114.7.153.31/index.php/humanitas/article/view/7756.