1
Crystal D, Cambridge Books Online EBS. English as a Global Language. Cambridge: Cambridge University Press 2012.
2
Fromkin V, Rodman R, Hyams NM. An introduction to language. 10th ed., International ed. Australia: Wadsworth, Cengage Learning 2014.
3
Hitchings H. The language wars: a history of proper English. 1st Picador ed. New York: Picador 2012.
4
Jenkins J. Global Englishes: a resource book for students. Third edition. London: Routledge, Taylor & Francis Group 2015.
5
Jenkins J. Global Englishes: a resource book for students. Third edition. London: Routledge, Taylor & Francis Group 2015.
6
Larsen-Freeman D, Anderson M. Techniques & principles in language teaching. 3rd ed. Oxford: Oxford University Press 2011.
7
Kirkpatrick A. World Englishes: implications for international communication and English language teaching. Cambridge: Cambridge University Press 2007.
8
Melchers G, Shaw P. World Englishes. Second edition. London: Routledge 2013.
9
Mooney A, Evans B. Language, society and power: an introduction. Fifth edition. London: Routledge, Taylor & Francis Group 2019.
10
Parrott M. Grammar for English language teachers. 2nd ed. Cambridge, UK: Cambridge University Press 2010.
11
Richards JC, Rodgers TS, Cambridge Books Online EBS. Approaches and Methods in Language Teaching. Cambridge: Cambridge University Press 2001.
12
Holmes J. An introduction to sociolinguistics. 4th ed. Harlow: Pearson 2013.