1. National Research Council. Health Effects of Exposure to Radon. BEIR (Biological Effects of Ionizing Radiation) VI. National Academy Press, Washington, D.C. 1999, 578 pp.
2. Wikipedia, the free encyclopedia. “Radon” Available at: http://en.wikipedia.org/wiki/Radon.
3. Peterson J. MacDonell M, Haroun L, Monettee F, Hildebrand RD, Toboas A. Radiological and chemical fact sheets to support health risk analysis for contaminated areas. Argon National Laboratory (ANL) Environmental Science Division and U.S. Department of Energy; 2007. Available at: http://www.ead.anl.gov/pub/doc/ANL_ContaminantFactSheets_All_070418.pdf.
4. World Health Organization. WHO air quality guidelines for Europe, 2nd edition, 2000 (CD ROM version), Part II: Evaluation of human health risks. Section 5: Organic pollutants; Chapter 8.3: Radon; 2000, 14 pp.
5. Agency for Toxic Substances and Disease Registry. Toxicological profile of radon; 2012, 226 pp. Available at: http://www.atsdr.cdc.gov/toxprofiles/tp145.pdf.