1. Indoor Pollutants (National Academy Press, Washington D.C., 1981)
2. J.F. Walker, Formaldehyde (Reinhold Publ., New York, 1964)
3. Advances in Chemistry Series,1985
4. L. Tataryn, Formaldehyde on Trial (J. Lorimor & Co., Toronto, 1983)
5. H.D. Gesser, Environ. Intern. 10, 305 (1984)