Lieberman, Philip. <br/><br/>
On the origins of language :  an introduction to the evolution of human speech / 
Philip Lieberman. 
 - New York :  MacMillan,  1975. 
 - viii, 196 p. :  ill. ;  24 cm. 
<br/><br/>Bibliography: p. 183-189. 
<br/><br/><label>ISBN: </label>0023706902 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Language and languages--Origin.