Zain, Riza Rosali, Juny Andry Sulistyo, and Sumirin Sumirin. “Analysis of Pilotage Service Time Trends at Terminals in the Surabaya’s West Shipping Channel”. ASTONJADRO 15, no. 2 (May 29, 2026): 537–544. Accessed October 23, 2026. http://150.107.142.43/index.php/ASTONJADRO/article/view/21406.