Bopp, Richard E. <br/><br/>
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. :  26 cm. 
<br/><br/><label>ISBN: </label>9781591583653 (hardcover : acidfree paper) 9781591583745 (pbk. : acidfree paper) 9781598848175 (ebk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Reference services (Libraries)<br/>Information services.<br/>Reference source<br/>Reference states
<br/><br/><label>Dewey Class. No.: </label>025.52  / REF