APA (7th ed.) Citation

National Gallery of Art (U.S.). (1978). Aspects of twentieth century art. National Gallery of Art.

Chicago Style (17th ed.) Citation

National Gallery of Art (U.S.). Aspects of Twentieth Century Art. Washington: National Gallery of Art, 1978.

MLA (9th ed.) Citation

National Gallery of Art (U.S.). Aspects of Twentieth Century Art. National Gallery of Art, 1978.