1. Melius, J., Wallingford, K., Keenlyside, R. and Carpenter, J. Indoor Air Quality—the NIOSH Experience. Annals of the American Conference of Governmental Industrial Hygienists. Vol. 10, pp.3–7. Cincinnati, OH: American Conference of Governmental Industrial Hygienists.
2. Seitz, T. A. NIOSH Indoor Air Quality Investigations: 1971 Through 1988. Proceedings of the Indoor Air Quality International Symposium. Edited by: Weekes, D. M. and Gammage, R. B. pp.163–171. Akron, OH: American Industrial Hygiene Association.
3. ANSI/ASHRAE Standard 62–1989,1990