Cassell, Kay Ann. <br/><br/>
Reference and information services in the 21st century :  an introduction / 
Kay Ann Cassell and Uma Hiremath. 
 - 2nd ed. rev. 
 - London :  Facet Publishing,  2011. 
 - xvii, 461 p. ;  23 cm. 
<br/><br/>Includes bibliographical references and indexes. 
<br/><br/><label>ISBN: </label>9781856047784 (pbk.)  RM210.09 1856047784 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Reference services (Libraries)