TY  - BOOK
AU  - Bayley, Robert  
AU  - Lucas, Ceil
TI  - Sociolinguistic variation : theories, methods and applications 
SN  - 978-0-521-69181-9
U1  - 301.21  18th.
PY  - 2007///
CY  - Cambridge 
PB  - Cambridge University Press  
KW  - Sociolinguistics
ER  -