Lovelock, J. (1991). Gaia: The practical science of planetary medicine. Allen and Unwin.
Lua i Stíl Chicago (17ú heag.)Lovelock, James. Gaia: The Practical Science of Planetary Medicine. North Sydney: Allen and Unwin, 1991.
Lua MLA (9ú heag.)Lovelock, James. Gaia: The Practical Science of Planetary Medicine. Allen and Unwin, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.