LASKI, E. V.; VASILYEVA, M.; SCHIFFMAN, J. Longitudinal Comparison of Montessori versus Non-Montessori Students’ Place-Value and Arithmetic Knowledge. Journal of Montessori Research, New York, NY, v. 2, n. 1, p. 1–15, 2016. DOI: 10.17161/jomr.v2i1.5677. Disponível em: https://journals.ku.edu/jmr/article/view/5677. Acesso em: 18 jan. 2022.