Marpaung, Edward, et al. “Analysis of Working Time Standard for Loading and Unloading Goods And Income for Loading Unloading Labor (Tkbm) at Traditional Shipping Quay of Sunda Kelapa Port”. Jurnal Ilmu Multidisiplin, vol. 3, no. 4, Jan. 2025, pp. 461-7, doi:10.38035/jim.v3i4.2101.