Reference and Information Services: : An Introduction/ 
Cassell, Kay Ann. 
 - 4th edition. 
 -  ALA Neal-Schuman,  2018 
 - 891 pages. 
<br/><br/>
<br/><br/><label>ISBN: </label>978-0-8389-1706-0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronic reference services (Libraries).
<br/><br/><label>Dewey Class. No.: </label>025.5 C344 2018