Preston, Dennis R. <br/><br/>
Varieties of American English :  Teacher's handbook / 
Dennis R. Preston, Roger W. Shuy. 
 - Revised 
 - Washington :  Bureau od Educational and Cultural Affairs :  English Language Programs Division :  U.S. Information Agency ,  1976. 
 - IV, 35 p. +  a cassette. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English, american--Rhetoric<br/>English
<br/><br/><label>Subjects--Index Terms: </label>EFL students