Towards Effective Participation in Sustainable Development: A comparative study of some distance higher education systems and the extent of their benefit locally and regionally. Journal of scientific conferences and seminars Queen Arwa University, [S. l.], v. 1, n. 1, p. 19–56, 2000. DOI: 10.58963/qaujscs.2000.1.253. Disponível em: https://journal.qau.edu.ye/index.php/jscs/article/view/253. Acesso em: 31 jul. 2025.