Philadelphia Museum of Art, Hiesinger, U. W., & Percy, A. (1980). A Scholar collects: Selections from the Anthony Morris Clark bequest. Philadelphia Museum of Art.
Chicago-referens (17:e uppl.)Philadelphia Museum of Art, Ulrich W. Hiesinger, och Ann Percy. A Scholar Collects: Selections from the Anthony Morris Clark Bequest. Philadelphia: Philadelphia Museum of Art, 1980.
MLA-referens (8:e uppl.)Philadelphia Museum of Art, et al. A Scholar Collects: Selections from the Anthony Morris Clark Bequest. Philadelphia Museum of Art, 1980.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.