ELVINAWANTY, Rianda; MARTIN, Christie; KUMALA, Livya Varelie; KHE, Rickson Endy; PATRICIA, Angella. Optimistic Thinking Training on Enhancement of Self-esteem in Street Children in the Komunitas Peduli Anak (KOPA) Medan. Journal of Psychology and Behavior Studies, [S. l.], v. 2, n. 1, p. 17–23, 2022. DOI: 10.32996/jpbs.2022.2.1.3. Disponível em: https://al-kindipublishers.org/index.php/jpbs/article/view/2773. Acesso em: 3 mar. 2026.