एपीए उद्धरण

P. W. Birnie. (2002). International law and the environment. Oxford: Oxford University Press.

शिकागो स्टाइल उद्धरण

P. W. Birnie. International Law and the Environment. Oxford: Oxford University Press, 2002.

एमएलए उद्धरण

P. W. Birnie. International Law and the Environment. Oxford: Oxford University Press, 2002.