6[1]Abercrombie, D. 1956. "Teaching Pronunciation", in Teaching English Pronunciation: A Book of Readings. 1991. ed. A. Brown. New York: Routledge.
7[2]Crystal, D. 1999. "The Future of Englishes". English Today 58, Vol. 15, No. 2: 10~20.
8[3]Jenkins, J. 2002. "A Sociolinguistically Based, Empirically Researched Pronunciation Syllabus for English as an International Language ". Applied Linguistics 23/1: 83~103.
9[4]Jenkins, J. 1998. "Which Pronunciation Norms and Models for English as an International Language?" ELT Journal 52/2 : 119~126.
10[5]Jenkins, J. 2000. The Phonology of English as an International Language. Oxfor University Press.