Mealey, George A.
Grasberg : mining the richest and most remote deposit of copper and gold in the world, in the mountains of Irian Jaya, Indonesia
Freeport-McMoran Copper & Gold, 1996
 Buku Teks SO
Newman, Arnold
Tropical rainforest : a world survey of our most valuable and endangered habitat with a blueprint for its survival / Arnold Newman
Fact on File, 1990
 Buku Teks
Science and the endangered species act
Washington National Academy Press , 1995
 Buku Teks
Encyclopedia of endangered species
edited by Mary Emanoil
Gale Research Inc., 1994
 Buku Referensi
Priebe, Mac
The peregrine falcon : endangered no more
Mindfull Publishing, 2000
 Buku Referensi