APA (7th ed.) Citation

BROWN, L. R. (1990). State of the World 1990: A worldwatch institute report on progress toward a sustainable social. W.W Norton & Co.

Chicago Style (17th ed.) Citation

BROWN, Lester R. State of the World 1990: A Worldwatch Institute Report on Progress Toward a Sustainable Social. W.W Norton & Co, 1990.

MLA (8th ed.) Citation

BROWN, Lester R. State of the World 1990: A Worldwatch Institute Report on Progress Toward a Sustainable Social. W.W Norton & Co, 1990.

Warning: These citations may not always be 100% accurate.