APA (7th ed.) Zitazioa

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

Chicago Style (17th ed.) Zitazioa

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

MLA (9th ed.) Zitazioa

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