Hayes, Denis
The official Earth Day guide to planet repair
Island Press, 2000
Buku Teks
The traveller's guide to planet Earth : experience 50 extraordinary destinations from the BBC's spectacular documentary
BBC Earth (Firm)
Lonely Planet, 2010
Buku Referensi
Botkin, Daniel B.
Environmental science : earth as a living planet
John Wiley & Sons, 1995
Buku Teks
Botkin, Daniel B.
Environmental science : earth as a living planet
John Wiley & Sons, 2000
Buku Teks
Botkin, Daniel B.
Environmental science : earth as a living planet
John Wiley & Sons, 2003
Buku Teks