M. Thoyyib, M. T., and Muhammad Aziz. “Strengthening the Character of Qolbu Management-Based Students in the Digital Era”. JEET, Journal of English Education and Technology, Vol. 3, no. 03, Oct. 2022, pp. 229-43, http://jeet.fkdp.or.id/index.php/jeet/article/view/81.