C. Rinandhi, Y. . Pahala, Z. . Abidin, and E. A. S. . Sijabat, “The Performance Level of Shipping Signs and the Depth of Shipping Channels Contribute to Integrated Port Time with the Number of Ship Visits as a Moderating Variable”, AMAR, vol. 5, no. 2, pp. 1161–1177, Nov. 2025.