2James Benya, Lisa Advanced Lighting Guideline New Buildings Institute, Inc, Heschong, Terry McGrowan 2003 2003 Edition. White Salmon 2.1-4.6
3Judith Block, John Bullough, Mariana Figueiro. IESNA Lighting Handbook. 9th Edition. New York: The Illuminating Engineering Society of North America, 2003: 3.3 -4.12.
