Ángel, F. (2002). Environmental law: From the agrarian empires.
Chicago Style aipamenaÁngel, Felipe. Environmental Law: From the Agrarian Empires. 2002.
MLA aipamenaÁngel, Felipe. Environmental Law: From the Agrarian Empires. 2002.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.