Sands, P., Peel, J., Fabra Aguilar, A., & MacKenzie, R. (2012). Principles of international environmental law (3rd ed.). Cambridge University Press.

Sands, Philippe, Jacqueline Peel, Adriana Fabra Aguilar, and Ruth MacKenzie. Principles of International Environmental Law. 3rd ed. Cambridge ; New York: Cambridge University Press, 2012.

Sands, Philippe, et al. Principles of International Environmental Law. 3rd ed. Cambridge University Press, 2012.