Earthscan Publications , 1999
Buku Teks
Lester R. Brown ...[et al.]
W.W. Norton, 1990
Buku Teks
Erik Assadourian, project director
Island Press, 2012
eBooks
Linda Starke, editor
W.W. Norton & Co.,, 2009
Buku Teks
Pinker, Steven
Penguin Books, 2002
Buku Teks