Sani, T., & Rochmoeljati, R. (2025). Analysis of Waste in Traffic Services on The Surabaya-Gesik Toll Road for Optimization with Lean Service Method at PT Margabumi Matraraya. Indonesian Interdisciplinary Journal of Sharia Economics (IIJSE), 8(2), 5571-5586. https://doi.org/10.31538/iijse.v8i2.6332