Itten, J., & Birren, F. (1970). 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.]: van Nostrand Reinhold Company.
Trích dẫn kiểu ChicagoItten, Johannes, và Faber Birren. 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.]: van Nostrand Reinhold Company, 1970.
Trích dẫn MLAItten, Johannes, và Faber Birren. 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.]: van Nostrand Reinhold Company, 1970.
Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.
