de Brouwer, Jaap, Vivian Morssink-Santing, and Symen van der Zee. “Validation of the Teacher Questionnaire of Montessori Practice for Early Childhood in the Dutch Context”. Journal of Montessori Research 10, no. 1 (May 15, 2024). Accessed January 9, 2026. https://journals.ku.edu/jmr/article/view/21543.