APA (7th ed.) Citation

Robertson, B., & Brock, C. (1999). Twentieth-century American art: The Ebsworth collection. National Gallery of Art.

Chicago Style (17th ed.) Citation

Robertson, Bruce, and Charles Brock. Twentieth-century American Art: The Ebsworth Collection. Washington, [D.C.]: National Gallery of Art, 1999.

MLA (9th ed.) Citation

Robertson, Bruce, and Charles Brock. Twentieth-century American Art: The Ebsworth Collection. National Gallery of Art, 1999.