LUBIS, H. .; RAHMANIAH , D. . Assertiveness and Self-Concept of Interpersonal Competence in Students. Journal of Humanities and Social Sciences Studies, [S. l.], v. 3, n. 6, p. 12–17, 2021. DOI: 10.32996/jhsss.2021.3.6.2. Disponível em: https://al-kindipublisher.com/index.php/jhsss/article/view/1775. Acesso em: 23 jul. 2021.