3. English around the world: an introduction Schneider, Edgar W. (Edgar Werner), 1954- Cambridge : Cambridge University Press, 2020. ENG450
4. The handbook of world Englishes Nelson, Cecil, Hoboken, New Jersey : Wiley-Blackwell, 2020. ENG450
5. Practical English phonetics and phonology: a resource book for students Collins, Beverley, London : Routledge, 2019 ENG202 ENG450 ENG381
6. How English became English: a short history of a global language Horobin, Simon, Oxford : Oxford University Press, 2016. ENG450
