APA-referens

(1999). State of the world 1999: A worldwatch Institute report on progress toward a sustainable society. New York: Norton.

Chicago-stil citat

State of the World 1999: A Worldwatch Institute Report On Progress Toward a Sustainable Society. New York: Norton, 1999.

MLA-referens

State of the World 1999: A Worldwatch Institute Report On Progress Toward a Sustainable Society. New York: Norton, 1999.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.