Authors
Agnieszka Mroczek-Czetwertyńska
The Angelus Silesius University of Applied Sciences in Wałbrzych
© 2019 Agnieszka Mroczek-Czetwertyńska, Beata Detyna, published by John Paul II University of Applied Sciences
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.