ZAPAŁA-KRAJ, M.; BABIARZ, M. Z. WWW as Modern Blackboard. Journal of Education, Technology and Computer Science, [S. l.], v. 13, n. 3, p. 26–32, 2015. Disponível em: https://journals.ur.edu.pl/jetacomps/article/view/6431. Acesso em: 22 jul. 2024.