The American Heritage English as a second language dictionary. 

 - Boston:  Houghton Mifflin Company,  c1998. 
 - 991 p.  ill.  22 cm. 
<br/><br/><label>ISBN: </label>0-395-81873-7 (pbk.) : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Dictionaries<br/>English language--Conversation and phrase books.