APA (7th ed.) Citation

Food and Agriculture Organization of the United Nations. (2006). World reference base for soil resources, 2006: A framework for international classification, correlation and communication (2006 ed.). Food and Agriculture Organization of the United Nations.

Chicago Style (17th ed.) Citation

Food and Agriculture Organization of the United Nations. World Reference Base for Soil Resources, 2006: A Framework for International Classification, Correlation and Communication. 2006 ed. Rome: Food and Agriculture Organization of the United Nations, 2006.

MLA (9th ed.) Citation

Food and Agriculture Organization of the United Nations. World Reference Base for Soil Resources, 2006: A Framework for International Classification, Correlation and Communication. 2006 ed. Food and Agriculture Organization of the United Nations, 2006.