Readings in American dialectology / 
edited by Harold Allen [and] Gary N. Underwood. 
 - New York :  Appleton-Century-Crofts,  1971. 
 - 584 p. :  mapas. 
<br/><br/> Author and Subject Index. - Word and Phrase Index. 
<br/><br/>General bibliography, p. 524-551. 
<br/><br/>1: Regional Dialects. - 2: Social Dialects. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>FONÉTICA--INGLÉS<br/>DIALECTO<br/>INGLES--ESTADOS UNIDOS DE AMERICA