-Calvet, Louis-Jean, Pour une écologie des langues du monde., París: Plon., 1999, Libro,

-Dixon, Robert M. W. , The Rise and Fall of Languages., Cambridge: Cambridge University Press., 1997, Libro,

-Mufwene, Salikoko, The Ecology of Language Evolution., Cambridge: Cambridge University Press., 2001, Libro,

-Nettle, Daniel , Linguistic Diversity., Oxford: Oxford University Press., 1999, Libro,

-Nichols, Johanna , Linguistic Diversity in Space and Time. , Chicago: Chicago University Press., 1992, Libro,

-Renfrew, Colin & Peter Bellwood (eds.), Language-Farming Dispersal., Cambridge: McDonald Institute for Archeological Research., 2002, Libro,

-Swaan, Abram De, Words of the World, Cambridge: Polity Press, 2001, Libro,