HANTOOL, Ahmed. Research Self-Efficiency and Its Relationship to Psychological hardness and Hope Among GraduateStudents in Jazan University. Jazan University Journal of Human Sciences, [S. l.], v. 9, n. 1, p. 13–40, 2020. DOI: 10.63908/yjg4c279. Disponível em: https://journals.jazanu.edu.sa/ojs/index.php/JUJHS/article/view/237. Acesso em: 23 dec. 2025.