APA (7th ed.) Citation

Worldwatch Institute & Brown, L. R. (1990). State of the world: A Worldwatch Institute report on progress toward a sustainable society. Allen & Unwin.

Chicago Style (17th ed.) Citation

Worldwatch Institute and Lester R. Brown. State of the World: A Worldwatch Institute Report on Progress Toward a Sustainable Society. Sydney, Australia: Allen & Unwin, 1990.

MLA (9th ed.) Citation

Worldwatch Institute and Lester R. Brown. State of the World: A Worldwatch Institute Report on Progress Toward a Sustainable Society. Allen & Unwin, 1990.