SHARMA, Ramesh Chander. Perspectives on distance education: Open schooling in the 21st century. The International Review of Research in Open and Distributed Learning, [S. l.], v. 11, n. 2, p. 97–99, 2010. DOI: 10.19173/irrodl.v11i2.852. Disponível em: https://www.irrodl.org/index.php/irrodl/article/view/852. Acesso em: 28 mar. 2024.