Authors
Agnieszka Mroczek-Czetwertyńska
The Angelus Silesius University of Applied Sciences, Wałbrzych
© 2018 Beata Detyna, Agnieszka Mroczek-Czetwertyńska, published by John Paul II University of Applied Sciences
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.