French, H. F. (1993). Costly tradeoffs: Reconciling trade and the environment. Worldwatch Insitute.
芝加哥风格引文French, Hilary F. Costly Tradeoffs: Reconciling Trade and the Environment. Washington, D. C: Worldwatch Insitute, 1993.
MLA引文French, Hilary F. Costly Tradeoffs: Reconciling Trade and the Environment. Worldwatch Insitute, 1993.
警告：这些引文格式不一定是100％准确.