Hopper, E. (1945). Edward Hopper. American artists group.
Cita Chicago (17th ed.)Hopper, Edward. Edward Hopper. New York: American artists group, 1945.
Cita MLA (9th ed.)Hopper, Edward. Edward Hopper. American artists group, 1945.
Atenció: Aquestes cites poden no estar 100% correctes.