APA aipamena

Orgasnisation for Economic Co-operation and Development. (1980). Environment policies for the 1980s. OECD.

Chicago Style aipamena

Orgasnisation for Economic Co-operation and Development. Environment Policies for the 1980s. Paris: OECD, 1980.

MLA aipamena

Orgasnisation for Economic Co-operation and Development. Environment Policies for the 1980s. OECD, 1980.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.