Wilman Jaya Ndruru. SOSIALISASI PELAYANAN PENERBITAN SURAT PERSETUJUAN BERLAYAR DI PELABUHAN SIBOLGA. PenMaRim [Internet]. 2025Jul.13 [cited 2026Jun.15];3(01). Available from: https://www.samudrajurnal.id/index.php/penmarim/article/view/74