Sitanggang , Jupriadi, Dafid Ginting, Yuna Sutria, and Muhammad Sahid. “TINJAUAN PROSES PELAYANAN JASA KAPAL PENUMPANG PADA PT. PELAYARAN NASIONAL INDONESIA MEDAN – BELAWAN”. Jurnal Adiguna Maritim Indonesia 2, no. 1 (May 29, 2025): 6-10. Accessed October 4, 2026. https://ejournal.poltek-amimedan.ac.id/index.php/jami/article/view/187.