T. Anugerah, J. P. Siburian, T. Nisari, H. Yaqin, and S. N. Adiprayoga, “A Study on the Livelihood Sources and Welfare Levels of Small-Scale Fishing Households in Tapanuli Tengah Regency, Sumatera Utara”, IJMEIR, vol. 9, no. 4, pp. 659–666, Jul. 2025.