DILLON, Connie L.; HENGST, Herbert R.; ZOLLER, Dawn. Instructional Strategies and Student Involvement in Distance Education: A Study of the Oklahoma Televised Instruction System. International Journal of E-Learning & Distance Education / Revue internationale du e-learning et la formation à distance, [S. l.], v. 6, n. 1, p. 28–41, 1991. Disponível em: https://www.ijede.ca/index.php/jde/article/view/392. Acesso em: 14 may. 2024.