About this article
Published Online: Sep 26, 2020
Page range: 70 - 78
DOI: https://doi.org/10.2478/plc-2020-0004
© 2020 Marlena Bartczak et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Marlena Bartczak
University of Warsaw,
Warsaw, Poland
Ewa Haman
University of Warsaw,
Warsaw, Poland
Natalia Banasik-Jemielniak
Maria Grzegorzewska University,
Warsaw, Poland