Gregory, R. L. (1973). Eye and brain: The psychology of seeing (2nd ed.). McGraw-Hill.
Cita Chicago (17th ed.)Gregory, Richard Langton. Eye and Brain: The Psychology of Seeing. 2nd ed. New York: McGraw-Hill, 1973.
Cita MLA (9th ed.)Gregory, Richard Langton. Eye and Brain: The Psychology of Seeing. 2nd ed. McGraw-Hill, 1973.
Atenció: Aquestes cites poden no estar 100% correctes.