FAO. (2000). Soil and terrain database, land degradation status and soil vulnerability assessment for central and eastern Europe: Version 1.0. Rome: Food and Agriculture Organization of the United Nations.
Chicago Style aipamenaFAO. Soil and Terrain Database, Land Degradation Status and Soil Vulnerability Assessment for Central and Eastern Europe: Version 1.0. Rome: Food and Agriculture Organization of the United Nations, 2000.
MLA aipamenaFAO. Soil and Terrain Database, Land Degradation Status and Soil Vulnerability Assessment for Central and Eastern Europe: Version 1.0. Rome: Food and Agriculture Organization of the United Nations, 2000.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.