PASARIBU, T. T. R. The Effect of Operational Fishing Cost Management on Fishermen’s Income in Pantai Labu and Percut Sei Tuan Districts. Jurnal Penelitian Samudra, [S. l.], v. 4, n. 02, 2026. Disponível em: https://www.samudrajurnal.id/index.php/samudra/article/view/130. Acesso em: 16 jul. 2026.