خلیلعطیف, and کاظمی فرمعین. “On Cultivating Gratitude (Shukr) in Sufi Virtue Ethics”. LANGUAGE ART 5, no. 1 (February 29, 2020): 7-38. Accessed July 11, 2020. https://www.languageart.ir/index.php/LA/article/view/162.