United States. National Gallery of Art & Zanesville Art Center Collection. (1967). Report and studies in the history of art. Superintendent of Documents, U.S. Government Printing Office.
Chicago-referens (17:e uppl.)United States. National Gallery of Art och Zanesville Art Center Collection. Report and Studies in the History of Art. Washington, D.C: Superintendent of Documents, U.S. Government Printing Office, 1967.
MLA-referens (9:e uppl.)United States. National Gallery of Art och Zanesville Art Center Collection. Report and Studies in the History of Art. Superintendent of Documents, U.S. Government Printing Office, 1967.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.