CHOMCZYŃSKA-RUBACHA, Mariola and RUBACHA, Krzysztof. The Sense of Efficiency Test. Theoretical and psychometric study of Research Tools Workshop of The Committee on Pedagogical Sciences of Polish Academy of Sciences. Przegląd Badań Edukacyjnych (Educational Studies Review). Online. 25 September 2013. Vol. 1, no. 16, pp. 85-105. [Accessed 19 July 2024]. DOI 10.12775/PBE.2013.007.