Al-Kaisi, Meis. “Rethinking Conceptual Sufism: A Synthesis of Islamic Spirituality, Asceticism, and Mysticism”. Teosofi: Jurnal Tasawuf dan Pemikiran Islam 11, no. 2 (December 1, 2021): 169–193. Accessed April 23, 2024. https://jurnalfuf.uinsa.ac.id/index.php/teosofi/article/view/1764.