Sihombing, Ima Rolastiur Teresia. “The The Effect of Work Discipline and Teamwork on Employee Productivity at Pt Pelabuhan Indonesia Regional 1 (Persero)”. Journal Business and Management 2, no. 2 (October 29, 2024): 272-288. Accessed December 22, 2024. https://ejournal.uhn.ac.id/index.php/business_management/article/view/2442.