Linguistics :  an Introduction to Languages and Communication / 
Adrian Akmajian , Richard A. Demers....[et al] 
 - 5th ed. 
 - London:  MIT Press,  2001. 
 - viii,604 p,; 
<br/><br/><label>ISBN: </label>0262011859 
<br/><br/><label>LC Class. No.: </label>P121  / .A395 2001