Makara-Studzińska, Marta, Jadwiga Trela, Renata Jankowska-Nowak, and Anna Grzywa-Celińska. 2009. “Aggression and Anger Levels in Young Psychoactive Substances Abusers”. Polish Journal of Public Health 119 (1): 29-32. https://czasopisma.umlub.pl/pjph/article/view/2139.