Crystal, David 1941-.
Linguistics /
David Crystal 
. - Harmondsworth : Baltimore : Ringwood : Penguin books,  1971 
. - 267 p.  schem.  19 cm. 
 - (A Pelican original )
<br/>К.: Бібліогр. : c. 260, Index 
<br/><label>  ISBN: </label>0-14-02.1332-5