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.
Precaución: Estas citas no son 100% exactas.