RYAN, T. G. Naturalistic Observation of Engagement and Disengagement within Professional Development in Education. International Online Journal of Education and Teaching, [S. l.], v. 6, n. 1, p. 37–54, 2019. Disponível em: https://iojet.org/index.php/IOJET/article/view/394. Acesso em: 8 jan. 2026.