Fadillatunnisa, F., Nasution, M. L. I. ., & Nasution, J. . (2024). Analysis of consumer protection system in improving expedition services from an Islamic perspective: A case study of insurance at J&T Express Medan. Journal of Islamic Economics Lariba, 10(1), 183–204. https://doi.org/10.20885/jielariba.vol10.iss1.art11