Virtual reference service :  from competencies to assessment / 
edited by R. David Lankes ... [et al.] 
 - New York :  Neal-Schuman Publishers,  2008 
 - xv, 206 p. :  ill. ;  23 cm. 
 - The virtual reference desk .
<br/><br/><label>ISBN: </label>1555705286  RM247.28 9781555705282 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronic reference services (Libraries)<br/>Reference services (Libraries)--Information technology<br/>Electronic reference services (Libraries)--Study and teaching<br/>Reference librarians--Effect of technological innovations on<br/>Electronic reference services (Libraries)--United States--Case studies