Hertsgaard, M. (1998). Earth odyssey: Around the world in search of our environmental future. Broadway Books.
Lua i Stíl Chicago (17ú heag.)Hertsgaard, Mark. Earth Odyssey: Around the World in Search of Our Environmental Future. New York: Broadway Books, 1998.
Lua MLA (9ú heag.)Hertsgaard, Mark. Earth Odyssey: Around the World in Search of Our Environmental Future. Broadway Books, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.