Hasan, Z., Dhea Utari, Y. ., & Dewi , I. . (2023). Buying and Selling Gas LPG 3 Kg According to Law Number 8 of 1999 and Sharia: Case Study in Bengkalis District. Constitution Journal, 2(1), 109–120. https://doi.org/10.35719/constitution.v2i1.44