TY  - BOOK
AU  - Wardhaugh,Ronald
TI  - Understanding English grammar: a linguistic approach 
SN  - 0631232915 (hbk.)
PY  - 2003///
CY  - Malden, MA
PB  - Blackwell Pub.
KW  - English language
KW  - Grammar
N1  - Includes bibliographical references and index
ER  -