ERTEN, N. B.; ERTEN, İsmail H. Academic Self-Concept and Students’ Achievement in the Sixth Grade Turkish Course: A Preliminary Analysis. International Online Journal of Education and Teaching, [S. l.], v. 1, n. 2, 2014. Disponível em: https://www.iojet.org/index.php/IOJET/article/view/29. Acesso em: 10 jan. 2026.