Gore, A. (1993). Earth in the Balance: Ecology and the human spirit. Penguin Books.
Lua i Stíl Chicago (17ú heag.)Gore, Albert. Earth in the Balance: Ecology and the Human Spirit. New York: Penguin Books, 1993.
Lua MLA (9ú heag.)Gore, Albert. Earth in the Balance: Ecology and the Human Spirit. Penguin Books, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.