Pola S.T. Panjaitan, Iman Mukhaimin, Dita Dwi Ambarwati, Rahmad Surya Hadi Saputra, and Liliek Soeprijadi. “Application of GMP and SSOP to the Production of Natural CO Frozen Red Kakap (Lutjanus sp.) Fillets at PT. Alam Jaya Surabaya”. Grouper, vol. 16, no. 1, Apr. 2025, pp. 1-20, doi:10.30736/grouper.v16i1.242.