Willis, Dave. <br/><br/>
Rules, patterns and words / 
by Dave Willis. 
 - Cambridge :  Cambridge University Press,  2005. 
 - 238 p. : ;  23 cm. 
 - Cambridge language teaching library .
 - Cambridge language teaching library .
<br/><br/><label>ISBN: </label>0521536197 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Grammar--Study and teaching.