Goodman, Elizabeth.,  author. <br/><br/>
Observing the user experience :  a practitioner's guide to user research/ 
Elizabeth Goodman ; Mike Kuniavsky & Andrea Moed. 
 - Second edition. 
 - Waltham, MA :  Morgan Kaufmann,   2012. 
 - xiii, 585 pages :  illustrations (some colour) ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>9780123848697 (paperback) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>User-centered system design.<br/>Observation (Scientific method).