Langacker, Ronald W. <br/><br/>
Language and its structure :  some fundamental linguistic concepts / 
Ronald W. Langacker 
 - 2nd ed. 
 - New York :  Harcourt Brace Jovanovich,  1973. 
 - 275 p. :  24 cm. 
<br/><br/><label>ISBN: </label>015549192X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Linguistics.<br/>Language and languages.