Itten, J., Birren, F., & Hagen, E. v. (2003). The elements of color: A treatise on the color system of Johannes Itten; based on his book The art of color. New York [u. a.]: Wiley.

Itten, Johannes, Faber Birren, und Ernst van Hagen. The Elements of Color: A Treatise On the Color System of Johannes Itten; Based On His Book The Art of Color. New York [u. a.]: Wiley, 2003.

Itten, Johannes, Faber Birren, und Ernst van Hagen. The Elements of Color: A Treatise On the Color System of Johannes Itten; Based On His Book The Art of Color. New York [u. a.]: Wiley, 2003.