KLYMENKO, Liudmyla, Nataliia RIDEI, i Olena KLYMENKO. 2016. „Mobility in the Professional Training”. Journal of Education, Technology and Computer Science, ISSN 2719-6550, e-ISSN 2719-7417 15 (1):32-36. https://doi.org/10.15584/eti.2016.1.4.