Lutz, E. (1993). Toward improved accounting for the environment. World Bank.
Chicago Style aipamenaLutz, Ernst. Toward Improved Accounting for the Environment. Washington, D.C.: World Bank, 1993.
MLA aipamenaLutz, Ernst. Toward Improved Accounting for the Environment. World Bank, 1993.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.