Reference And Information Services : An Introduction / Richard E. Bopp And Linda C. Smith Editors. 

 - 4th ed. 
 -  Santa Barbara Calif. : Libraries Unlimited C2011. 
 - XXIII 743 P. : ILL. 26 CM. 
 -  0 .
<br/><br/><br/>ENG 
<br/><br/><label>ISBN: </label>9781591583653 (Hardcover : Acid-Free Paper) 9781591583745 (Pbk. : Acid-Free Paper) 9781598848175 (Ebk.)