Levin, G. (1979). Edward Hopper as illustrator: Gail Levin. Norton u.a..
Cita Chicago (17th ed.)Levin, Gail. Edward Hopper as Illustrator: Gail Levin. New York: Norton u.a., 1979.
Cita MLA (8th ed.)Levin, Gail. Edward Hopper as Illustrator: Gail Levin. Norton u.a., 1979.
Atenció: Aquestes cites poden no estar 100% correctes.