Rinaldi, Muammar, Anita Harahap, Eko Wahyu Nugrahadi, and Saidun Hutasuhut. “Factors Affecting Fishers’ Income In Sibolga City”. Advances in Social Sciences Research Journal 6, no. 7 (July 25, 2019): 359–370. Accessed December 7, 2025. https://www.journals.scholarpublishing.org/index.php/ASSRJ/article/view/6770.