1. Domashnev, A.I. (1990), “The main features of multinational languages”, Languages of the world: problems of linguistic variability, Nauka, Moscow, USSR, pp. 74–96.
2. Stewart, W.A. (1968), “A Sociolinguistic Typology for Describing National Multilingualism”, Readings in the Sociology of Language, The Hague, De Gruyter Mouton, NDL, pp. 531–545. DOI: https://doi.org/10.1515/9783110805376.531.
3. Dzhundubaeva, A.A. (2017), “Descriptive models of pluricentric languages”, Universum: philology and art history, no. 10 (44), available at: https://7universum.com/ru/philology/archive/item/5193 (accessed 10.09.2020).
4. Shaibakova, D. (2014), “Рluriсentric Language Research: Problems, Terminology, Methods”, Acta Universitatis Lodziensis. Folia Linguistica Rossica, no. 10, pp. 155–165.
5. Razumova, L.V. (2011), “Correlation of the notions ”regional language” аnd “the language of minorities””, Humanitarian Vector. Ser. Pedagogy, psychology, no. 2, pp. 213–217.