N, D. G.; SAMOSIR, R. H. . PROSES PENERBITAN CERTIFICATE OF COMPETENCY (COC) DAN CERTIFICATE OF PROFICIENCY (COP) OLEH KEMENTERIAN PERHUBUNGAN. Journal of Maritime and Education (JME), [S. l.], v. 2, n. 1, p. 103-107, 2020. Disponível em: https://ejournal-poltekamimedan.my.id/index.php/jme/article/view/21. Acesso em: 12 jun. 2026.