Research methods for : human-computer interaction/ 
[edited by]Paul Cairns and Anna L.Cox 
 - Cambrigde :Cambrigde Universtity,  2008 
 - xvi,242 p. :  ill. ;  25 cm. 
<br/><br/> Includes Index. 
<br/><br/><label>ISBN: </label>9780521690317(pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Human -computer interaction