Authors
Katarzyna Szczepańska-Woszczyna
The University of Dąbrowa Górnicza, Faculty of Applied Sciences Department of Management,, Dąbrowa Górnicza, Poland
© 2018 Katarzyna Szczepańska-Woszczyna, published by Warsaw University of Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.