Tibbitts, E. L. (Ernest Leonard). <br/><br/>
Practice material for the English sounds / 
by E. L. Tibbitts. 
 - Cambridge :  W. Heffer & Sons,  1963. 
 - 138 p. :  ill. ;  24 cm. 
<br/><br/> Includes indexes. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Pronunciation.