The Effectiveness of Gratitude Training to Improve the Subjective Well-Being of Broken Home Adolescents in The Child Care Community (KOPA) Medan. Psikostudia [Internet]. 2022 Jun. 9 [cited 2026 Oct. 23];11(2):313-2. Available from: https://e-journals.unmul.ac.id/index.php/PSIKO/article/view/7713