Ulma with feeling of freedom at student of secondary stage . Journal Of Educational and Psychological Researches, [S. l.], v. 11, n. 42, p. 216–245, 2014. Disponível em: https://www.jperc.uobaghdad.edu.iq/index.php/jperc/article/view/479. Acesso em: 5 jul. 2025.