Frank, Irene; Brownstone, David. (1992). The Green encyclopedia / Irene Franck and David Brownstone. New York :: Prentice Hall,.
Frank, Irene; Brownstone, David. The Green encyclopedia / Irene Franck and David Brownstone. New York :: Prentice Hall,, 1992
Frank, Irene; Brownstone, David. The Green encyclopedia / Irene Franck and David Brownstone. New York :: Prentice Hall,, 1992.