Prator, Cliford H. [et al.]..
Manual of American English Pronunciation /
Cliford H. Prator, Jr., Betty Wallace Robinett. - 4 edition 
. - Chicago ; San Francisco ; Philadelphia  : Holt, Rinehart and Winston, INS,  1985 
. - xxx, 244 p. : tabl., ill.  24 cm. 
<br/><label>  ISBN: </label>0-03-000703-8