APA (7th ed.) Citation
(1991). State of the World 1991: <A> Worldwatch Institute Report on Progress Toward a Sustainable Society (1. ed.). Norton and Co.
Chicago Style (17th ed.) Citation
State of the World 1991: <A> Worldwatch Institute Report on Progress Toward a Sustainable Society. 1. ed. New York: Norton and Co, 1991.
MLA (9th ed.) Citation
State of the World 1991: <A> Worldwatch Institute Report on Progress Toward a Sustainable Society. 1. ed. Norton and Co, 1991.
Warning: These citations may not always be 100% accurate.