Παραπομπή APA

Beckwith, S., & Thornton, J. (1997). Environmental Law.

Παραπομπή Chicago Style

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

Παραπομπή MLA

Beckwith, Silas, και Justine Thornton. Environmental Law. 1997.