Sangara Junaedi Forganda Sitorus, et al. “The Effect of Work Motivation, Work Responsibility, and Work Discipline on Employee Work Productivity at PT Belawan New Container Terminal”. International Conference Epicentrum of Economic Global Framework, Feb. 2026, pp. 1756-67, https://proceeding.pancabudi.ac.id/index.php/ICEEGLOF/article/view/1752.