[1] Choudhry, S. & Houlihan, E. C. (2021). Official Language Designation. International IDEA Constitution Building Primer 20. Stockholm: International IDEA.
[2] Cooper, R. L. (1989). Language planning and social change. Cambridge: Cambridge University Press.
[3] Fishman, J. A. (1972). Language in sociocultural change. Stanford: Stanford University Press.
[4] May, S. (2012). Language and minority rights: Ethnicity, nationalism and the politics of language. New York: Routledge.
[5] Nguyễn Văn Khang. (2019). Hiến định ngôn ngữ quốc gia và việc xây dựng “Luật Ngôn ngữ quốc gia” ở Việt Nam. Kỉ yếu Hội thảo Khoa học Quốc gia 2019, tr.334-341. Hà Nội.
[6] Rubin, J. & Jernudd, B. H. (1971). Can language be planned? Sociolinguistic theory and practice for developing nations. Honolulu: University Press of Hawaii.
[7] Shohamy, E. (2006). Language Policy: Hidden Agendas and New Approaches. London: Routledge.
[8] Skutnabb-Kangas, T. (2012). The role of linguistic human rights in language policy and planning.
[9] Spolsky, B. (2004). Language policy. Cambridge: Cambridge University Press.
[10] Spolsky, B. (2012). The Cambridge handbook of language policy. Cambridge: Cambridge University Press.
[11] Tsui, A. B. M. & Tollefson, J. W. (Eds.). (2017). Language policy, culture, and identity in Asian contexts. Mahwah, NJ: Lawrence Erlbaum Associates.
[12] UNESCO. (2003). Recommendation concerning the promotion and use of multilingualism and universal access to cyberspace. Paris: UNESCO.
[13] Wiley, T. G. & García, O. (2016). Language policy and planning in language education: Legacies, consequences, and possibilities. The Modern Language Journal, 100(Suppl. 1), pp.48-63.

