Retnowati, M. S., Noor Hilal, F., & Amir Sup, D. F. (2020). Unpaid Plastic Bag Discount Analysis Based on Islamic Law Perspective (Case Study on Waralaba Retail X in Ponorogo). INSLA E-Proceedings, 3(1), 147-154. Retrieved from https://insla.usim.edu.my/index.php/eproceeding/article/view/28