Cita APA (7a ed.)

Sands, P. (2003). Principles of international environmental law (2a ed.). Cambridge University Press.

Cita Chicago Style (17a ed.)

Sands, Philippe. Principles of International Environmental Law. 2a ed. Cambridge ; New York: Cambridge University Press, 2003.

Cita MLA (9a ed.)

Sands, Philippe. Principles of International Environmental Law. 2a ed. Cambridge University Press, 2003.