Worldwatch Institute & Brown, L. R. (1988). State of the world 2001: A Worldwatch Institute report on progress toward a sustainable society. Earthscan.
芝加哥风格引文Worldwatch Institute 与 Lester Russell Brown. State of the World 2001: A Worldwatch Institute Report on Progress Toward a Sustainable Society. London: Earthscan, 1988.
MLA引文Worldwatch Institute 与 Lester Russell Brown. State of the World 2001: A Worldwatch Institute Report on Progress Toward a Sustainable Society. Earthscan, 1988.
警告：这些引文格式不一定是100％准确.