D. Izza Dewangga, S. Heri Suseno, and P. Arafah, “Effectiveness of Urea Crystallization Method in the Producting Omega-3 Concentrate from Tuna (Thunnus sp.)”, J. Ilmu. Pertan. Indones., vol. 31, no. 3, pp. 605–610, May 2026, doi: 10.18343/jipi.31.3.605.