n, D. G., & Samosir, R. H. . (2020). PROSES PENERBITAN CERTIFICATE OF COMPETENCY (COC) DAN CERTIFICATE OF PROFICIENCY (COP) OLEH KEMENTERIAN PERHUBUNGAN. Journal of Maritime and Education (JME), 2(1), 103-107. Retrieved from https://ejournal-poltekamimedan.my.id/index.php/jme/article/view/21