E. G. Polonnikova, M. Kalle, L. Moskovkin, N. A. Liubimova. "SUBJECTIVITY AND OBJECTIVITY OF SOCIOCULTURAL UNITS SELECTION IN RUSSIAN AS A FOREIGN LANGUAGE TEXTBOOKS." 6th International Scientific Conference on Social Sciences and Arts SGEM 2019 (2019): 291-298. https://doi.org/10.5593/sgemsocial2019V/2.1/S10.038