Sak, Jarosław, Michał Wiechetek, Marek Jarosz, Jakub Pawlikowski, Andrzej Kapusta, Lidia Rejdak, and Piotr Książek. 2013. “Health Behaviors and Psychological Health Control Types Among University Students”. Polish Journal of Public Health 123 (3): 236-40. https://doi.org/10.12923/j.0044-2011/123-3/a.06.