Fabian-Danielewska, A., K. Korabiusz, A. Wawryków, M. Stecko, I. Janik-Fuks, M. Maciejewska, E. Grudzińska, and M. Gibka. “Nutrition of Healthy Infants”. Journal of Education, Health and Sport, vol. 9, no. 7, July 2019, pp. 299-02, https://apcz.umk.pl/JEHS/article/view/7142.