Umayah, S., and J. Junanah. “Study On The Pesantren Education In The Perspective Of Kiai Sahal Mahfudh And Its Relevance With The Development Of Contemporary Pesantren”. AZKA International Journal of Zakat & Social Finance, vol. 1, no. 2, Feb. 2021, pp. 23-43, doi:10.51377/azjaf.vol1no2.28.