Barasa, Larsen, April Gunawan Malau, and Bambang Sumali. 2019. “Effect of Berthing Time and Berth Output on Conventional Donation Utilization at PT Pelindo II Palembang Branch”. International Review of Management and Marketing 9 (6):6-17. https://www.econjournals.com/index.php/irmm/article/view/8531.