MASRUR, Imam. Konsep Tasawuf Substantif Dalam Muhammadiyah. Spiritualita, [S. l.], v. 3, n. 1, p. 75–103, 2019. DOI: 10.30762/spr.v3i1.1515. Disponível em: http://103.134.17.251/spiritualita/article/view/513. Acesso em: 1 july. 2026.