Albers, Josef,

Interaction of Color,

Yale University Press, 1963.

Allen, Grant,

The Colour-Sense,

Trubner & Co., London, 1879.

Alschuler, Rose H. and La Berta Weiss Hatwick,

University of Chicago, 1947.

Aristotle, works of,

Volume VI,

Shafi da ba'a sani ba