National Research Council. 1985. Guide for the Care and Use of Laboratory Animals, 6th Edition. National Institutes of Health: Bethesda, MD.

Good husbandry minimizes variations that can modify an animal's response to experimentation [p. 11]] ...Lighting should be uniformly diffused throughout animal facilities to provide sufficient illumination to aid in maintaining good houskeeping practices, adequate inspection of animals, safe working conditions for personnel, and the well-being of animals [p. 29].