KAŹMIERSKA, Marlena. Assertiveness as an important social competence in the school reality of students. Kultura-Społeczeństwo-Edukacja, [S. l.], v. 13, n. 1, p. 169–180, 2018. DOI: 10.14746/kse.2018.13.13. Disponível em: https://pressto.amu.edu.pl/index.php/kse/article/view/22268. Acesso em: 17 jul. 2024.