Sands, P. (2003). Principles of International Environmental Law (2nd ed.). Cambridge University Press.
Chicago-referens (17:e uppl.)Sands, Philippe. Principles of International Environmental Law. 2nd ed. UK: Cambridge University Press, 2003.
MLA-referens (9:e uppl.)Sands, Philippe. Principles of International Environmental Law. 2nd ed. Cambridge University Press, 2003.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.