Douglas, Dan, <br/><br/>
Assessing language for specific purposes / 
Dan Douglas 
 - xiii, 311 pages :  illustrations ;  23 cm. 
 - The Cambridge language assessment series .
 - Cambridge language assessment series .
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9780521585439 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Second language acquisition--Testing<br/>Sublanguage--Study and teaching