Eliminating Helplessness in Pre-School Children Relying on Proprietary Programme Entitled Optimistic Kindergarten. Global Journal of Human-Social Science, [S. l.], v. 15, n. G4, p. 25–28, 2015. Disponível em: https://socialscienceresearch.org/index.php/GJHSS/article/view/1458. Acesso em: 3 apr. 2026.