Pristiani, T., Rozci, F. and Indah, P.N. 2025. Marketing Efficiency Analysis of Robusta Coffee Commodity in Dampit District, Malang Regency. Indonesian Interdisciplinary Journal of Sharia Economics (IIJSE). 8, 2 (May 2025), 5602-5615. DOI:https://doi.org/10.31538/iijse.v8i2.6137.