n, Dafid Gintig, and Roma Helmauli Samosir. “PROSES PENERBITAN CERTIFICATE OF COMPETENCY (COC) DAN CERTIFICATE OF PROFICIENCY (COP) OLEH KEMENTERIAN PERHUBUNGAN”. Journal of Maritime and Education (JME) 2, no. 1 (February 1, 2020): 103-107. Accessed October 10, 2026. https://ejournal.poltek-amimedan.ac.id/index.php/jme/article/view/21.