Cita APA (7a ed.)

(1987). State of the World 1987: A Worldwatch Institute Report on Progress Toward a Sustainable Society. W.W.Norton.

Cita Chicago Style (17a ed.)

State of the World 1987: A Worldwatch Institute Report on Progress Toward a Sustainable Society. New York (etc.): W.W.Norton, 1987.

Cita MLA (9a ed.)

State of the World 1987: A Worldwatch Institute Report on Progress Toward a Sustainable Society. W.W.Norton, 1987.