Further reading

If you miss real books already, here are some which can be found at the library of University of Sao Paulo:

• Dialects of English: studies in grammatical variation, by Peter Trudgill and J.K. Chambers;
  
• English Dialects, by G.L. Brook;
• Variety in contemporary English, by W.R.O'Donnel and Loreto Todd.

Otherwise, you can shop at Livraria Cultura:

• English accents and dialects: an introduction to social and regional varieties, by Peter Trudgill, Arthur Hughs and Dominic Watt;
• An atlas of English dialects, by Clive Upton.