Kościołek, Aneta, Tomasz Cuber, and Joanna Girzelska. “Sexual Behaviours of the Secondary School Youths Vs. Sexual Morality System”. Polish Journal of Public Health 121, no. 1 (January 1, 2011): 16–21. Accessed February 10, 2026. https://czasopisma.umlub.pl/pjph/article/view/1755.