Fitri, E., Winbaktianur, W., & Fadhilah, F. (2026). THE RELATIONSHIP BETWEEN DIFFICULTY COEFFICIENT AND PSYCHOLOGICAL WELL-BEING AMONG EMPLOYEES OF PT. CHINA STATE CONSTRUCTION OVERSEAS DEVELOPMENT SHANGHAI. Pacak: Journal of Naka Psychology, 1(1), 23–32. Retrieved from https://journal.nahra.id/index.php/pacak/article/view/35