20th Century Art :  Museum Ludwig Cologne. 

 - Koln :  Benedikt Taschen Verlag,  1996. 
<br/><br/><label>ISBN: </label>3822886475 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ARTE - SIGLO XX.<br/>ARTE CONTEMPORANEO.<br/>ARTE MODERNO.<br/>ARTE POP.