Zadworna-Cieślak, Magdalena, and Karolina Kossakowska. “The Subjective Mental Well-Being of School-Age Children – Educational and Prophylactic Challenges”. Przegląd Badań Edukacyjnych (Educational Studies Review) 2, no. 27 (November 29, 2018): 129–148. Accessed December 4, 2021. https://apcz.umk.pl/PBE/article/view/PBE.2018.021.