Gregory, R. L. (1973). Eye and brain: The psychology of seeing (2nd ed.). McGraw-Hill.
Chicago-viite (17. p.)Gregory, Richard Langton. Eye and Brain: The Psychology of Seeing. 2nd ed. New York: McGraw-Hill, 1973.
MLA-viite (9. p.)Gregory, Richard Langton. Eye and Brain: The Psychology of Seeing. 2nd ed. McGraw-Hill, 1973.
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