Eka N.A.M. Sihombing, Eddy Purnama, Budiman Ginting, Faisal Akbar Nasution, “THE REGIONAL REGULATION CONCERNING MANAGEMENT OF ZAKAT VIEWED FROM THE PRINCIPLES OF FORMULATION OF LEGISLATION”, IJAST, vol. 29, no. 06, pp. 1098 - 1103, Apr. 2020.