Husen, Achmad, et al. “Pendidikan Karakter Berbasis Spiritualisme Islam (Tasawuf)”. Jurnal Studi Al-Qur’an, vol. 10, no. 1, Jan. 2017, pp. 1-19, https://journal.unj.ac.id/unj/index.php/jsq/article/view/4414.