Creating orthographies for endangered languages
edited by Mari C. Jones, Damien Mooney
Cambridge University Press, 2017
 Buku Teks SO
Austin, Peter K., editor
The Cambridge handbook of endangered languages
Cambridge University Press, 2011
 eBooks
Evans, Nicholas, author
Dying words : endangered languages and what they have to tell us
Wiley-Blackwell, 2010
 Buku Teks SO
Science and the endangered species act
Washington National Academy Press , 1995
 Buku Teks
Encyclopedia of endangered species
edited by Mary Emanoil
Gale Research Inc., 1994
 Buku Referensi
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