Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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