Cierzniewska, R., and A. Błachnio. “Proactive Coping in Youth and Old Age As an Indicator of Identity Formation in an Anormative Context”. Multidisciplinary Journal of School Education, Vol. 10, no. 2 (20), Dec. 2021, pp. 201-18, doi:10.35765/mjse.2021.1020.11.