“The Effect of Gratitude on the Happiness Levels of Students in the Faculty of Da’wah and Communication: A Study at Universitas Islam Negeri Sumatera Utara”. Indonesian Journal of Counseling and Development 8, no. 1 (July 1, 2026): 174–185. Accessed August 5, 2026. https://ejournal.iainkerinci.ac.id/index.php/bkpi/article/view/7451.