Rizkiyah, E., H. Supriyanto, K. P. Dharaka, L. Grace, and I. Rahmaningtyas. “Waste Analysis of the International Delivery Service Process Using Lean Six Sigma in Logistics Service Provider Companies”. Journal of Applied Engineering and Technological Science (JAETS), vol. 6, no. 1, Dec. 2024, pp. 262-80, doi:10.37385/jaets.v6i1.5792.