Cita APA (7a ed.)

Thornton, J., & Beckwith, S. (1997). Environmental law. Sweet & Maxwell.

Cita Chicago Style (17a ed.)

Thornton, Justine, y Silas Beckwith. Environmental Law. London: Sweet & Maxwell, 1997.

Cita MLA (9a ed.)

Thornton, Justine, y Silas Beckwith. Environmental Law. Sweet & Maxwell, 1997.