Answers are grounded in this paper and cite their sources.
Books reviewed in this article: David Crystal, Language Death Leanne Hinton and Ken Hale (eds.), The Green Book of Language Revitalization in Practice Daniel Nettle and Suzanne Romaine, Vanishing Voices: The Extinction of the World's Languages
No takes yet. Share an insight, caveat, or question.
Peter Mühlhäusler (2003) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: