Cita APA (7a ed.)

Postel, S. (1986). Altering the earth's chemistry: Assessing the risks. Worldwatch Institute.

Cita Chicago Style (17a ed.)

Postel, Sandra. Altering the Earth's Chemistry: Assessing the Risks. Washington, D.C.: Worldwatch Institute, 1986.

Cita MLA (9a ed.)

Postel, Sandra. Altering the Earth's Chemistry: Assessing the Risks. Worldwatch Institute, 1986.