focal area

Sources

• FRANCIS 1983 6

  FRANCIS, W.N. (1983) Dialectology: An Introduction. London: Longman.

• LEHMANN 1992 130

  LEHMANN, Winfred P. (1992) Historical Linguistics, 3rd Edition. London: Routledge.

• MATTHEWS 1997 131

  MATTHEWS, P.H. (1997) The Concise Oxford Dictionary of Linguistics. Oxford: Oxford University Press.

• CRYSTAL 2003 32, 183

  CRYSTAL, David. (2003) A Dictionary of Linguistics and Phonetics, 5th Ed Oxford: Blackwell.