The National Gallery companion guide / 
Erika Langmuir. 
 - New rev. ed. 
 - London ;  New Haven, Conn. :  National Gallery Publications ;  Distributed by Yale University Press,  1997 
 - 344 p. :  col. ill. ;  24 cm. 
 - 75(42)(084) (NLA) .
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>185709218X 
<br/><br/><label>Universal Decimal Class. No.: </label>75(42)(084) (NLA)