Lovelock, J. (1991). Gaia: The practical science of planetary medicine. Allen and Unwin.
Cita Chicago (17th ed.)Lovelock, James. Gaia: The Practical Science of Planetary Medicine. North Sydney: Allen and Unwin, 1991.
Cita MLA (9th ed.)Lovelock, James. Gaia: The Practical Science of Planetary Medicine. Allen and Unwin, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.