APA
Working Party on Soil Classification and Survey of the European Comm ission on Agriculture, Food and Agriculture Organisation of United Nations & United Nations Educational Scientific and Cultural Organisation. (1971). Report of the meeting on Soil Classification and Survey of the Europ ean Commission on Agriculture held in Helsinki 1971. Rome: Food and Agriculture Organisation of United States.
Chicago
Working Party on Soil Classification and Survey of the European Comm ission on Agriculture, Food and Agriculture Organisation of United Nations and United Nations Educational Scientific and Cultural Organisation. 1971. Report of the meeting on Soil Classification and Survey of the Europ ean Commission on Agriculture held in Helsinki 1971. Rome: Food and Agriculture Organisation of United States.
Harvard
Working Party on Soil Classification and Survey of the European Comm ission on Agriculture, Food and Agriculture Organisation of United Nations and United Nations Educational Scientific and Cultural Organisation. (1971). Report of the meeting on Soil Classification and Survey of the Europ ean Commission on Agriculture held in Helsinki 1971. Rome: Food and Agriculture Organisation of United States.
MLA
Working Party on Soil Classification and Survey of the European Comm ission on Agriculture, Food and Agriculture Organisation of United Nations and United Nations Educational Scientific and Cultural Organisation. Report of the meeting on Soil Classification and Survey of the Europ ean Commission on Agriculture held in Helsinki 1971. Rome: Food and Agriculture Organisation of United States. 1971.