LILLARD, A. S.; HEISE, M. J. An Intervention Study: Removing Supplemented Materials from Montessori Classrooms Associated with Better Child Outcomes. Journal of Montessori Research, New York, NY, v. 2, n. 1, p. 16–26, 2016. DOI: 10.17161/jomr.v2i1.5678. Disponível em: https://journals.ku.edu/jmr/article/view/5678. Acesso em: 29 jun. 2022.