Cassell, Kay Ann <br/><br/>
Reference and information services in the 21st century :  an introduction / 
Kay Ann Cassell and Uma Hiremath 
 - London :  Facet Pub.,  2006 
 - 378 p. :  forms ;  23 cm. 
<br/><br/><label>ISBN: </label>1856045986 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Reference services (Libraries)<br/>Electronic reference services (Libraries)<br/>Reference books--Bibliography<br/>Electronic reference sources--Directories