Cita APA (7a ed.)

Worldwatch Institute. (1984). State of the world. Norton.

Cita Chicago Style (17a ed.)

Worldwatch Institute. State of the World. New York: Norton, 1984.

Cita MLA (8a ed.)

Worldwatch Institute. State of the World. Norton, 1984.

Precaución: Estas citas no son 100% exactas.