Permata, Andre, et al. “Effect of Unloading Equipment Rubber Tyred Gantry Crane on Productivity of Unloading PT Port of Indonesia II Port Panjang Lampung”. Jurnal Manajemen Bisnis Transportasi Dan Logistik, vol. 9, no. 1, Dec. 2023, pp. 29-36, doi:10.54324/j.mbtl.v9i1.1213.