MAMMERI , Mahfoud. Positive thinking and its relation to the motivation of learning among the students of third year of secondary education in the Wilaya of Msila A field study in Ain Al - Hadjel high-schools. Journal of Social Sciences and Humanities , [S. l.], v. 9, n. 02, p. 293, 2020. Disponível em: https://journals.univ-msila.dz/index.php/JOSSH/article/view/7990. Acesso em: 22 mar. 2026.