APA aipamena

Sally K. Fairfax. Guide to U.S. Environmental Policy. SAGE.

Chicago Style aipamena

Sally K. Fairfax. Guide to U.S. Environmental Policy. SAGE.

MLA aipamena

Sally K. Fairfax. Guide to U.S. Environmental Policy. SAGE.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.