Cita APA (7a ed.)

Thornton, J., & Beckwith, S. (2004). Environmental law (2nd ed.).

Cita Chicago Style (17a ed.)

Thornton, Justine, y Silas Beckwith. Environmental Law. 2nd ed. 2004.

Cita MLA (9a ed.)

Thornton, Justine, y Silas Beckwith. Environmental Law. 2nd ed. 2004.