Cita APA (7a ed.)

Sands, P., Peel, J., Fabra Aguilar, A., & MacKenzie, R. (2018). Principles of international environmental law (Fourth edition.). Cambridge University Press.

Cita Chicago Style (17a ed.)

Sands, Philippe, Jacqueline Peel, Adriana Fabra Aguilar, y Ruth MacKenzie. Principles of International Environmental Law. Fourth edition. Cambridge, United Kingdom ; New York, NY, USA: Cambridge University Press, 2018.

Cita MLA (8a ed.)

Sands, Philippe, et al. Principles of International Environmental Law. Fourth edition. Cambridge University Press, 2018.