HARTONO, Toni. The phenomenon of the Islamic Spiritual Youth Da’wah Movement of Pekanbaru City. Ilmu Dakwah: Academic Journal for Homiletic Studies, [S. l.], v. 13, n. 1, p. 117–134, 2019. DOI: 10.15575/idajhs.v13i1.4565. Disponível em: https://journal.uinsgd.ac.id/index.php/idajhs/article/view/4565. Acesso em: 6 dec. 2025.