Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

Worldwatch Institute. State of the World. New York [etc.]: W.W. Norton, 1984.

Cita MLA (9a ed.)

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