Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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