M. Tamudin and Y. Fitriyati, “IMPLEMENTATION OF PROFESSIONAL ZAKAT BASED ON THE REGIONAL REGULATION OF PALEMBANG CITY NUMBER 4 OF 2017 AT THE PALEMBANG CITY GOVERNMENT OFFICE”, Nurani, vol. 21, no. 2, pp. 291–306, Dec. 2021, doi: 10.19109/nurani.v21i2.10092.