Download the full article as a PDF file.
© 2016 Barbara Kołodziejczak, Magdalena Roszak, Anna Ren-Kurc, Andrzej Bręborowicz, Wojciech Kowalewski, published by University of Białystok, Department of Pedagogy and Psychology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.