Goldstein, Kurt, “Some Experimental Observations on the Influence of Color on the Function of the Organism,”

Occupational Therapy and Rehabilitation,

June 1942.

Graves, Maitland,

The Art of Color and Design,

McGraw-Hill, New York, 1952.

Gregory, R. L.,

Eye and Brain,

World University Library, New York, 1967.

Gregory, R. L.,

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