Tham khảo Ngôn_ngữ_bị_đe_dọa

  1. ↑ Crystal, David (2002). Language Death. Cambridge University Press. tr. 11. ISBN 0521012716. A language is said to be dead when no one speaks it any more. It may continue to have existence in a recorded form, of course traditionally in writing, more recently as part of a sound or video archive (and it does in a sense 'live on' in this way) but unless it has fluent speakers one would not talk of it as a 'living language'.
  2. 1 2 Austin, Peter K; Sallabank, Julia (2011). “Introduction”. Trong Austin, Peter K; Sallabank, Julia (biên tập). Cambridge Handbook of Endangered Languages. Cambridge University Press. ISBN 978-0-521-88215-6.
  3. ↑ See pp. 55-56 of Zuckermann, Ghil‘ad, Shakuto-Neoh, Shiori & Quer, Giovanni Matteo (2014), Native Tongue Title: Proposed Compensation for the Loss of Aboriginal Languages, Australian Aboriginal Studies 2014/1: 55-71.
  4. ↑ Moseley, Christopher biên tập (2010). Atlas of the World's Languages in Danger. Memory of Peoples (ấn bản 3). Paris: UNESCO Publishing. ISBN 978-92-3-104096-2. Truy cập ngày 15 tháng 5 năm 2018.
  5. ↑ Grinevald, Collette & Michel Bert. 2011. "Speakers and Communities" in Austin, Peter K; Sallabank, Julia, eds. (2011). Cambridge Handbook of Endangered Languages. Cambridge University Press. ISBN 978-0-521-88215-6. p.50
  6. ↑ Crystal, David (2002). Language Death. England: Cambridge University Press. tr. 3. ISBN 0521012716. As a result, without professional guidance, figures in popular estimation see-sawed wildly, from several hundred to tens of thousands. It took some time for systematic surveys to be established. Ethnologue, the largest present-day survey, first attempted a world-wide review only in 1974, an edition containing 5,687 languages.
  7. ↑ Crystal, David (2000). Language Death. Cambridge. tr. 3. ISBN 0521653215.