Reference and information services :  a reader / 
edited by Bill Katz and Andrea Tarr. 
 - Metuchen, NJ :  Scarecrow Press,  1978. 
<br/><br/>Bibliography: p. [447]-456. 
<br/><br/><label>ISBN: </label>0810810913 
<br/><br/><label>LCCN: </label>77020698 //r86 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Reference services (Libraries).<br/>Information services.
<br/><br/><label>LC Class. No.: </label>Z711  / .R44 
<br/><br/><label>Dewey Class. No.: </label>025.5/2