National Gallery of Art. (1970). American paintings and sculpture: An illustrated catalogue. National Gallery of Art.
Chicago Style (17th ed.) ZitazioaNational Gallery of Art. American Paintings and Sculpture: An Illustrated Catalogue. Washington: National Gallery of Art, 1970.
MLA (9th ed.) ZitazioaNational Gallery of Art. American Paintings and Sculpture: An Illustrated Catalogue. National Gallery of Art, 1970.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.