APA (7th ed.) Citation

(1990). Twentieth-Century Art: National Gallery of Art, Washington 1991. National Gallery of Art.

Chicago Style (17th ed.) Citation

Twentieth-Century Art: National Gallery of Art, Washington 1991. Washington: National Gallery of Art, 1990.

MLA (9th ed.) Citation

Twentieth-Century Art: National Gallery of Art, Washington 1991. National Gallery of Art, 1990.

Warning: These citations may not always be 100% accurate.