Apriantoro, Muhamad Subhi, Yasir Hasanridhlo, Widhi Indira Laksmi, Leny Agustin, and Muhammad Zakir Husain. 2023. “A Barter System for Used Palm Oil Traders: Islamic Law Perspective”. Demak Universal Journal of Islam and Sharia 1 (01):57-66. https://doi.org/10.61455/deujis.v1i01.34.