Cita APA (7a ed.)

Caldicott, H. (1992). If you love this planet: A plan to heal the earth. W.W. Norton.

Cita Chicago Style (17a ed.)

Caldicott, Helen. If You Love This Planet: A Plan to Heal the Earth. New York: W.W. Norton, 1992.

Cita MLA (8a ed.)

Caldicott, Helen. If You Love This Planet: A Plan to Heal the Earth. W.W. Norton, 1992.