1. Chinese Englishes: a sociolinguistic history Bolton, Kingsley, 1947- Cambridge, UK ; Cambridge University Press, 2003 ENG250 ENG450
2. English as a global language Crystal, David, 1941- Cambridge, UK ; Cambridge University Press, 2003. ENG250
3. Sociolinguistics: method and interpretation Milroy, Lesley. Malden, Mass. : Blackwell Pub., 2003. ENG250