Cita APA (7a ed.)

Ziegler, A. R. (1996). Trade and environmental law in the European Community. Clarendon.

Cita Chicago Style (17a ed.)

Ziegler, Andreas R. Trade and Environmental Law in the European Community. Oxford: Clarendon, 1996.

Cita MLA (9a ed.)

Ziegler, Andreas R. Trade and Environmental Law in the European Community. Clarendon, 1996.