Adrian, Fiki, and Diswandi. “The Impact of Green Economy Initiatives at Universities on Student Expenditures: A Case Study of the Gridwiz E-Bike Program and Water Refill Station at Mataram University”. Al-Kharaj: Journal of Islamic Economic and Business 8, no. 2 (May 9, 2026). Accessed May 13, 2026. https://ejournal.iainpalopo.ac.id/index.php/alkharaj/article/view/9800.