Jendza, J., i J. Grzanka. „Freinet and Montessori in Practice. A Comparative Analysis of the Meanings Attributed to the Process of Learning by Early Education Teachers – Research Report”. Problemy Wczesnej Edukacji, T. 51, nr 4, grudzień 2020, s. 167-79, doi:10.26881/pwe.2020.51.13.