LEFOR, Patricia J.; BENKE, Meg; TING, Evelyn. Empire State College: The Development of Online Learning. The International Review of Research in Open and Distributed Learning, [S. l.], v. 1, n. 2, 2001. DOI: 10.19173/irrodl.v1i2.22. Disponível em: https://www.irrodl.org/index.php/irrodl/article/view/22. Acesso em: 2 may. 2024.