Lolo Tandung, Albertha, Muhammad Saleh, and Obet Lumalan Bijang. “Layanan Pandu Bagi Kelancaran Operasional Kapal”. Hengkara Majaya 1, no. 1 (June 3, 2020): 33–42. Accessed August 15, 2025. http://jurnal.poltekpelbarombong.ac.id/index.php/hmj/article/view/15.