Oxford University Press <br/><br/>
Oxford A- Z of spelling 

 - New York  Oxford University Press  2011 
 - 140 
<br/><br/><label>ISBN: </label>978-0-19-806464-0 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>
<br/><br/><label>Dewey Class. No.: </label>R421