Printed reference material and related sources of information / 
edited by Peter W. Lea with Alan Day. 
 - 3nd ed. 
 - London :  The Library Association,  1990. 
 - xxv, 589 p. 
<br/><br/><label>ISBN: </label>1856040186 
<br/><br/><label>LCCN: </label>92045117     
<br/><br/><label>Subjects--Topical Terms: </label><br/>Reference books.<br/>Reference services (Libraries).