The Effectiveness of a proposed program for developing Twenty-first Century Skills Among University Students. Sana’a University Journal of Human Sciences, [S. l.], v. 4, n. 8, p. 267–307, 2025. DOI: 10.59628/jhs.v4i8.1617. Disponível em: https://journals.su.edu.ye/index.php/jhs/article/view/1617. Acesso em: 13 may. 2026.