Authors
Maciej Perkowski
University of Bialystok, Faculty of Law
Maciej Oksztulski
University of Bialystok, Faculty of Law
Izabela Kaczyńska
Non-State Higher Pedagogical School in Bialystok, Faculty of Social Sciences in the Department of Pedagogy
© 2018 Maciej Perkowski, Maciej Oksztulski, Izabela Kaczyńska, published by University of Białystok
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.