New directions in the study of language / 
Eric H. Lenneberg, editor. 
 - Cambridge, Mass. :  M.I.T. Press,  1964. 
 - ix, 194 p. :  ill. ;  22 cm. 
<br/><br/>p. 188-189. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Children--Language.