Peter Trudgill 
Dialects [PDF ebook] 

Routledge Language Workbooks provide absolute beginners with practical introductions to core areas of language study. Books in the series provide comprehensive coverage of the area as well as a basis for further investigation. Each
Language Workbook guides the reader through the subject using ”hands-on” language analysis, equipping them with the basic analytical skills needed to handle a wide range of data. Written in a clear and simple style, with all technical concepts fully explained,
Language Workbooks can be used for independent study or as part of a taught class.
This second edition of
Dialects:
*has been revised throughout
*introduces the many dialects of English spoken in the United Kingdom
*reveals the key issues that dialectology engages with
*uses both the international phonetic alphabet and simple representations of sounds to explain pronunciations
*involves readers in collecting data
*contains numerous illustrative maps
*is written in a lively and engaging style, with information on ”posh and less posh” dialects and spotting your dialect area.