Flavin, Christopher, author
Earthscan Publications, 1995
Buku Teks
Flavin, Christopher, author
Worldwatch Institute , 1986
Buku Teks
Flavin, Christopher, author
Worldwatch Institute, 1985
Buku Teks
Nugent, Nicholas
In Print Publishing, 1996
Buku Teks
Faith, Nicholas
Motorbooks International, 1995
Buku Teks