Langacker, Ronald W.. <br/><br/>
Language and Its Structure: Some fundamental Linguistic concepts /  

 - Second Ed. /  
 - New York :   Harcourt Brace Jovanovich, Inc.. 
 - p.275 :  
<br/><br/><label>ISBN: </label>0-15-549192-X 
<br/><br/><label>Dewey Class. No.: </label>P111:2  / K7L,L3;1