Maemunah S, Aji AB, Setiawan EB, Yuliantini Y, Tatiana Y. Human Resources Certification and Ship Safety Competency in Lake Toba. j. manaj. transp. logist. [Internet]. 2025 Jul. 18 [cited 2026 Oct. 31];12(2):215-22. Available from: https://journal.itltrisakti.ac.id/index.php/jmtranslog/article/view/1530