Jones, M. C. (1998). Language obsolescence and revitalization: Linguistic change in two sociolinguistically contrasting Welsh communities. Clarendon Press.
Chicago-referens (17:e uppl.)Jones, Mari C. Language Obsolescence and Revitalization: Linguistic Change in Two Sociolinguistically Contrasting Welsh Communities. Oxford: Clarendon Press, 1998.
MLA-referens (9:e uppl.)Jones, Mari C. Language Obsolescence and Revitalization: Linguistic Change in Two Sociolinguistically Contrasting Welsh Communities. Clarendon Press, 1998.
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