Tortella, Patrizia, and Guido Fumagalli. 2015. “Activities in the Zone of Proximal Development Between the Development of Motor Skills and School Readiness: Studies in Kindergartens”. Formazione & Insegnamento 13 (1). Lecce-Brescia (IT):355-68. https://ojs.pensamultimedia.it/index.php/siref/article/view/1700.