Ковтун, О.В., Гармаш, Т.А. and Струк, І.В. 2021. SOCIOLINGUISTIC AND EDUCATIONAL ANALYSIS OF LANGUAGE PROFICIENCY OF ACTIVE OPERATIONAL PROFESSIONALS AND AB INITIO STUDENTS IN AVIATION. Proceedings of the National Aviation University. Series: Pedagogy, Psychology. 18 (Jun. 2021), 66–76. DOI:https://doi.org/10.18372/2411-264X.18.15476.