Birnie, P. W. (1992). International law and the environment. Oxford: Clarendon.
Trích dẫn kiểu ChicagoBirnie, Patricia W. International Law and the Environment. Oxford: Clarendon, 1992.
MLA引文Birnie, Patricia W. International Law and the Environment. Oxford: Clarendon, 1992.
警告：這些引文格式不一定是100％准確.