APA (7th ed.) Citation

Wright, W. D. (1968). The rays are not coloured: Essays on the science of vision and colour. American Elsevier Pub. Co..

Chicago Style (17th ed.) Citation

Wright, W. D. The Rays Are Not Coloured: Essays on the Science of Vision and Colour. New York: American Elsevier Pub. Co., 1968.

MLA (8th ed.) Citation

Wright, W. D. The Rays Are Not Coloured: Essays on the Science of Vision and Colour. American Elsevier Pub. Co., 1968.