Valentini, Manuela, Mariachiara Mancini, Gaetano Raiola, and Ario Federici. “Digital and Non-Verbal Communication in Preschool: A Systematic Review”. Journal of Human Sport and Exercise 14, no. 4proc (October 24, 2019): S997-S1016. Accessed May 9, 2024. https://www.jhse.ua.es/article/view/2019-v14-n4-proc-digital-non-verbal-communication-preschool-revi.