Wahyudi, M. I., A. H. . Miftah, S. J. Saidu, and M. Mustagfiroh. “The Analysis of Buying and Selling Promo Products in Islamic Law Perspective”. Al Ahkam, vol. 20, no. 2, Dec. 2024, pp. 270-91, doi:10.37035/ajh.v20i2.11314.