Harahap, D., M. Arif, N. Farizal, and M. Nauli. “Waqf Behavior During The Covid-19 Pandemic”. Jurnal Iqtisaduna, Vol. 1, no. 1, Aug. 2020, pp. 136-48, doi:10.24252/iqtisaduna.v1i1.22354.