Nonverbal behavior and communication 
edited by Aron W. Siegman, Stanley Feldstein. 
 - 2nd. ed. 
 - Hillsdale, New Jersey  Lawrence Erlbaum Associates  1987. 
 - 637 p. ; 23 cm. 
<br/><br/>p. 596-601. 
<br/><br/><label>ISBN: </label>0805800182 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nonverbal communication (Psychology).