Kalinowski, Paweł, Ewelina Kozłowska, Michał Woś, Anna Kobiałka, Eliza Wołoszynek, Maria Bożenna Wawrzycka, and Henryk Wiktor. “Environmental Exposure of Pregnant Women to Tobacco Smoke and Selected Socio-Economic Factors”. Journal of Education, Health and Sport 7, no. 8 (August 31, 2017): 537–549. Accessed August 16, 2024. https://apcz.umk.pl/JEHS/article/view/4773.