The following sources were consulted for the content of language policies within country constitutions:
University of Wuerzburg. 1999. International Constitutional Law. At http://www.uni-wuerzburg.de.law.[Accessed 1998–2000. Project currently hosted by Berne University at http://www.servat.unibe.ch/icl/.]
Varennes, Fernand de. 1996. Language, Minorities and Human Rights. The Hague: M. Nijhoff.