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 28 June 2025]. DOI 10.12775/JEHS.2023.18.01.012.