Kay Ann cassell <br/><br/>
Reference and  information  services   An introduction   Xx,480 p.:ill.;26 cm 
By Kay Ann Cassell and  Uma hiremath 
 -  4th Edition  
 -  Neal schuman  June 2018 
<br/><br/> Reference  interview, sources 
<br/><br/><label>ISBN: </label>9780838915684