Sumali, Banbang, et al. “The Influence of Ship’s Seaworthiness and Compensation System Towards Ship’s Crew Job Satisfaction" at PT. Humpuss Bulk Transportation Jakarta”. International Review of Management and Marketing, vol. 9, no. 5, Sept. 2019, pp. 38-45, https://econjournals.com./index.php/irmm/article/view/8534.