The Relationship between Self-Efficacy and Positive Thinking Ability in Adolescents at Karya Bhakti Middle School, Tarastar District, Humbang Hasundutan Regency, 2021. Jurnal Indah Sains dan Klinis, [S. l.], v. 3, n. 2, p. 50–56, 2022. DOI: 10.52622/jisk.v3i2.61. Disponível em: https://ejournal.sumateraconnect.or.id/index.php/jisk/article/view/42.. Acesso em: 21 nov. 2024.