BARTZ, Janet. Great Idea, but how do I do it? A practical example of learning object creation using SGML/XML. Canadian Journal of Learning and Technology, [S. l.], v. 28, n. 3, 2002. DOI: 10.21432/T2XS4T. Disponível em: https://cjlt.ca/index.php/cjlt/article/view/26563. Acesso em: 16 apr. 2026.