Deptuła, M., & Borucka, A. (2020). School Risk Factors in Developing a Sense of Competence by Polish Pupils: Their Fourth and Fifth Year of Learning at Primary School – Longitudinal Studies. Przegląd Badań Edukacyjnych (Educational Studies Review), 2(31), 23–42. https://doi.org/10.12775/PBE.2020.017