Austin, Peter K., editor
The Cambridge handbook of endangered languages
Cambridge University Press, 2011
eBooks
Evans, Nicholas
Dying words : endangered languages and what they have to tell us
Wiley-Blackwell, 2010
Buku Teks
Science and the endangered species act
Washington National Academy Press , 1995
Buku Teks
Priebe, Mac
The peregrine falcon : endangered no more
Mindfull Publishing, 2000
Buku Referensi
Discovering endangered wildlife
Multimedia