Sani, Tiara, and Rr. Rochmoeljati. 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), 5571-86. https://doi.org/10.31538/iijse.v8i2.6332.