“The Effectiveness of Gratitude Training to Improve the Subjective Well-Being of Broken Home Adolescents in The Child Care Community (KOPA) Medan”. Psikostudia : Jurnal Psikologi 11, no. 2 (June 9, 2022): 313–323. Accessed October 23, 2026. https://e-journals.unmul.ac.id/index.php/PSIKO/article/view/7713.