Robison, A. (2001). Later American collectors of later German drawings.
Chicago-Zitierstil (17. Ausg.)Robison, Andrew. Later American Collectors of Later German Drawings. 2001.
MLA-Zitierstil (9. Ausg.)Robison, Andrew. Later American Collectors of Later German Drawings. 2001.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.