APA aipamena

Bell, S. (1997). Environmental law (ed. 4.). Black Stone Press.

Chicago Style aipamena

Bell, Stuart. Environmental Law. ed. 4. London: Black Stone Press, 1997.

MLA aipamena

Bell, Stuart. Environmental Law. ed. 4. Black Stone Press, 1997.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.