TY  - BOOK
AU  - Bayley, Robert  .
TI  - Sociolinguistic variation: theories, methods and applications / 
SN  - 978-0-521-69181-9
U1  - P:(Y) 
PY  - 2007///
CY  - Cambridge : 
PB  - Cambridge University Press , 
KW  - Sociolinguistic
ER  -