Ethnologue :  languages of the world / 
  Languages of the world. 
M. Paul Lewis, editor. 
 - 16th ed. 
 - Dallas, Tex. :  SIL International,  c2009. 
 - 1248 p. :  ill. (col. maps) ;  27 cm. 
<br/><br/>Includes bibliographical references (p. 659-672) and indexes. 
<br/><br/><label>ISBN: </label>781556712166 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Language and languages--Statistics.
<br/><br/><label>Dewey Class. No.: </label>403