Utari, R., H. Monoarfa, and S. Yayu Ninglasari. “Factors Influencing Corporate Zakat Expenditure (Case Study of Islamic Banks in Indonesia Period 2015-2017)”. KnE Social Sciences, Vol. 3, no. 13, Mar. 2019, pp. 413–427, doi:10.18502/kss.v3i13.4220.