Collins English dictionary. 

 - Twelfth edition 
 - Glasgow : HarperCollins Publishers, 2014. 
 - xxii, 2305 pages ; 27 cm 
<br/><br/><label>ISBN: </label>9780007522743 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language -- Dictionaries.<br/>English language.