APA (7th ed.) Citation

International Union of Soil Sciences, International Soil Reference and Information Centre (ISRIC), & 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.). FAO of the United Nations.

Chicago Style (17th ed.) Citation

International Union of Soil Sciences, International Soil Reference and Information Centre (ISRIC), and 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: FAO of the United Nations, 2006.

MLA (9th ed.) Citation

International Union of Soil Sciences, et al. World Reference Base for Soil Resources 2006: A Framework for International Classification, Correlation and Communication. 2006 ed. FAO of the United Nations, 2006.