THE EXTRACURRICULAR CLASSES ORGANIZED THROUGH VOLUNTARY WORKS IN THE MOUNTAINOUS REGIONS FOR THE MEDIA STUDENT Статья Nguyen V.T., Vu T.TN., Ho X.N., Vu H.N., Hochunskaya L.V. INTED 2015. 9th International Technology, Education and Development Conference: proceedings. [б.и.]. 2020. С. 8560-8563