Usman, Maman. “Komunikasi Spiritual Syekh Muhammad Abdul Gaos Saefulloh Melalui Gerakan Dakwah Tarekat”. Ilmu Dakwah: Academic Journal for Homiletic Studies 11, no. 1 (June 30, 2017): 177–194. Accessed December 15, 2025. http://103.55.33.27/index.php/idajhs/article/view/1529.