Gevorkian, Peter, author
Mc Graw Hill, 2010
Buku Teks
Anderson, Bruce N., author
McGraw-Hill, 1977
Buku Teks
Anderson, Bruce N., author
McGraw-Hill, 1977
Buku Teks
Flavin, Christopher, author
Worldwatch Institute, 1988
Buku Teks
Tomain, Joseph P.
West Publishing Company, 1981
Buku Teks