-. (1988). Selected environmental law statutes: 1988-1989 educational edition. West Pub.
Chicago Style aipamena-. Selected Environmental Law Statutes: 1988-1989 Educational Edition. St. Paul: West Pub, 1988.
MLA aipamena-. Selected Environmental Law Statutes: 1988-1989 Educational Edition. West Pub, 1988.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.