Ekin Lesmana Ginting, Dirhamsyah Dirhamsyah, Masringgit Marwiyah Nst. Prosedur Penerbitan Certificate Of Pratique (COP) di Kantor Kesehatan Pelabuhan Belawan Oleh PT. Semesta Sejahtera Lestari Belawan. jmki-widyakarya [Internet]. 2024 Oct. 31 [cited 2024 Dec. 5];2(4):44-50. Available from: https://ifrelresearch.org/index.php/jmki-widyakarya/article/view/4344