Ginting, Dafid. “DAMPAK PELAKSANAAN INTERNATIONAL SAFETY MANAGEMENT (ISM) CODE TERHADAP PERUSAHAAN PELAYARAN”. Journal of Maritime and Education (JME) 5, no. 2 (August 22, 2023): 486 - 492. Accessed July 29, 2026. https://ejournal-poltekamimedan.my.id/index.php/jme/article/view/106.