NISAK, F. Self-concept, emotional maturity and assertive behavior of adolescents. Acta Psychologia, [S. l.], v. 1, n. 2, p. 63–72, 2022. Disponível em: https://psychologia.pelnus.ac.id/index.php/Psychologia/article/view/16. Acesso em: 17 jun. 2026.