Duda, Mariola, Michał Rżany, Aleksandra Dudło, Krzysztof Suszyński, Dariusz Górka, and Aleksandra Dogońska. 2015. “Students’ Attitude towards Taking up Physical Activities Apart from University Classes”. Quality in Sport 1 (2):53-59. https://doi.org/10.12775/QS.2015.011.