Ayres, R. U., Button, K., & Nijkamp, P. (1999). Global aspects of the environment. Edward Elgar Pub. Ltd.
芝加哥风格引文Ayres, Robert U., Kenneth Button, 与 Peter Nijkamp. Global Aspects of the Environment. Cheltenham, U.K: Edward Elgar Pub. Ltd, 1999.
MLA引文Ayres, Robert U., et al. Global Aspects of the Environment. Edward Elgar Pub. Ltd, 1999.
警告：这些引文格式不一定是100％准确.