APA (7th ed.) Citation

Hopper, E., & Du Bois, G. P. (1931). Edward Hopper. Whitney Museum of American Art.

Chicago Style (17th ed.) Citation

Hopper, Edward, and Guy Pène Du Bois. Edward Hopper. New York: Whitney Museum of American Art, 1931.

MLA (9th ed.) Citation

Hopper, Edward, and Guy Pène Du Bois. Edward Hopper. Whitney Museum of American Art, 1931.