1.
Zadworna-Cieślak M, Kossakowska K. The Subjective Mental Well-Being of School-Age Children – Educational and Prophylactic Challenges. PBE [Internet]. 2018 Nov. 29 [cited 2021 Dec. 4];2(27):129-48. Available from: https://apcz.umk.pl/PBE/article/view/PBE.2018.021