Crystal, David <br/><br/>
Dictionary of Linguistics and Phonetics. 

 - 2nd edn. 
 - Oxford  Blackwell Publishers  1985 
 - xvi,426p. 
 - Language Library .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pk
<br/><br/><label>Dewey Class. No.: </label>Pk  / Lo.L5