U. Khoir Rambe, N. Damanik, and A. M Harahap, “The Struggle for Spiritual Authority from the Holy Land to Indonesia: Reference from the Tarekat Naqshabandiyya Jabal Hindi (TNJH) in North Sumatra”, Teosofi. J. Tas. Pem. Islam., vol. 10, no. 2, pp. 204–225, Dec. 2020.