FAO. (1993). FAO conservation guide N.23: Debt-for-nature swaps to promote natural resource conservation. Rome: FAO.
Chicago Style aipamenaFAO. FAO Conservation Guide N.23: Debt-for-nature Swaps to Promote Natural Resource Conservation. Rome: FAO, 1993.
MLA aipamenaFAO. FAO Conservation Guide N.23: Debt-for-nature Swaps to Promote Natural Resource Conservation. Rome: FAO, 1993.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.