TY  - BOOK
AU  - Swan, Michael.
AU  - Walter, Catherine
TI  - How English Works : : a grammar practice book 
SN  - 9780194314565
U1  - 425 SWA 23
PY  - 2009///
CY  - New York
PB  - Oxford University Press, 
KW  - English language
KW  - Grammar
KW  - English language--Usage.	
N1  - Includes bibliographical references and index
ER  -