Gefvert, Constance J. <br/><br/>
Keys to American English 
by Constance Gefvert 
 - New York  Harcourt Brace Jovanovich  1975 
 - 389 p. : ill. ; 28 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0155978586 
<br/><br/><label>LCCN: </label>75-1666 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Dialects--United States<br/>English language--Grammar--1950