Di Carluccio, Ivan, Simone Zulli, Anna Maria Mariani, and Ilaria Viscione. “Effortless Swimming and Movement Development in Childhood”. Journal of Human Sport and Exercise 14, no. 4proc (October 24, 2019): S830-S834. Accessed May 8, 2024. https://www.jhse.ua.es/article/view/2019-v14-n4-proc-effortless-swimming-movement-development-childh.