FAO. (1995). World soil resources reports N.80: Soil survey: Perspectives and strategies for the 21st century. Rome: FAO.
Chicago-tyylinen lähdeviittausFAO. World Soil Resources Reports N.80: Soil Survey: Perspectives and Strategies for the 21st Century. Rome: FAO, 1995.
MLA-viiteFAO. World Soil Resources Reports N.80: Soil Survey: Perspectives and Strategies for the 21st Century. Rome: FAO, 1995.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.