Ryan, Diane <br/><br/>
The complete idiot’s guide to baby sign language / 
 Idiot’s guide to baby sign language  Baby sign language 
by Diane Ryan 
 - 2nd ed. 
 - Indianapolis, IN :  Alpha Books,  c2009. 
 - xvii, 267 p. :  ill. ;  23 cm. 
<br/><br/>Includes bibliographical references (p. 243-244) 
<br/><br/><label>ISBN: </label>1592578624 9781592578627 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nonverbal communication in infants<br/>Interpersonal communication in infants<br/>Sign language