“ANALISIS PENGARUH EFFECTIVE TIME TERHADAP BERTH OCCUPANCY RATIO DI WILAYAH TERSUS SEMEN INDONESIA GROUP TUBAN”. Jurnal Maritim Malahayati 6, no. 1, Januari (January 1, 2025): 317–322. Accessed November 4, 2026. https://journal.poltekpelaceh.ac.id/index.php/jumama/article/view/113.