ZAJĄC, Anna, DOBKO, Katarzyna, FRĄCZ, Gabriela, GLAC, Agata, KULIGA, Klaudia, MUSZ, Kinga, SEJNOWSKA, Natalia, SOCHA, Agnieszka, SUROWIEC, Agata and ŚNIEŻEK, Kinga. Causes of depressive disorders and their degree and severity among high school students. Journal of Education, Health and Sport. Online. 18 July 2023. Vol. 18, no. 1, pp. 123-146. [Accessed 17 August 2024]. DOI 10.12775/JEHS.2023.18.01.012.