Barry, Tom
Grove Weidenfeld, 1991
Buku Teks
Editor by Seymour Melman
The American Academy of Arts and Science, 1962
Buku Teks
edited by Harvey G. Kebschull
Appleton-Century-Crofts , 1968
Buku Teks
Commoner, Barry
Knopf, 1979.
Buku Teks
Gunther, John, 1901-1970, author
Harper & Brothers, 1941
Buku Teks