Sawicka, Katarzyna, Agnieszka Wawryniuk, Robert Łuczyk, Ewa Krzyżanowska, Natalia Szubiela, Marta Łuczyk, and Jadwiga Daniluk. 2017. “Assessment of the State of Nutritionality and Method of Food of Children of Furnishing to Basic and Gynal Schools”. Journal of Education, Health and Sport 7 (7):510-28. https://apcz.umk.pl/JEHS/article/view/4654.