[1]
J. Culpeper, English language: description, variation and context. Houndmills, Basingstoke: Palgrave Macmillan, 2009.
[2]
A. Merrison, A. Bloomer, P. Griffiths, and C. J. Hall, Introducing language in use: a coursebook, Second Edition. London: Routledge, Taylor & Francis Group, 2014.
[3]
J. Culpeper, P. Kerswill, R. Wodak, T. McEnery, and F. Katamba, Eds., English language: description, variation and context, Second edition. London: Palgrave, 2018 [Online]. Available: http://www.vlebooks.com/vleweb/product/openreader?id=LeicesterU&isbn=9781137571854
[4]
A. J. Merrison, A. Bloomer, P. Griffiths, and C. J. Hall, Introducing Language in Use: A Course Book, 2nd ed. Florence: Taylor and Francis, 2013 [Online]. Available: http://ebookcentral.proquest.com/lib/leicester/detail.action?docID=1582671