Schuna, J. M., G. Liguori, and J. T. Jared Tucker. “Seasonal Changes in Preschoolers’ Sedentary Time and Physical Activity at Childcare”. International Journal of Child Health and Nutrition, vol. 5, no. 1, Mar. 2016, pp. 17-24, doi:10.6000/1929-4247.2016.05.01.3.