Purnama, Fahmy. “SPIRITUALITAS TANPA AGAMA: POTRET PERKEMBANGAN RELIGIUSITAS DI BARAT”. Al-Adabiya: Jurnal Kebudayaan dan Keagamaan 13, no. 01 (September 3, 2018): 32-56. Accessed May 5, 2024. https://ejournal.insuriponorogo.ac.id/index.php/adabiya/article/view/3.