UNPAID PLASTIC BAG DISCOUNT ANALYSIS BASED ON ISLAMIC LAW PERSPECTIVE(CASE STUDY ON WARALABA RETAIL X IN PONOROGO). International Seminar on Syariah and Law (INSLA), [S. l.], v. 3, n. 1, p. 147–154, 2020. Disponível em: https://fsuproceedings.usim.edu.my/index.php/insla/article/view/162. Acesso em: 14 mar. 2026.