Bibliography
Bibliography of Vitality:
James Woodward. 2012. "Personal Communication on sign languages."
Bibliography of Locations:
Lewis, M. Paul (ed.). 2009. Ethnologue: Languages of the World, 16 edn. http://www.ethnologue.com/home.asp. (15 February, 2011.)
Bibliography of Context:
James Woodward. 2012. "Personal Communication on sign languages."