FAO. (2002). Major soils of the world. Rome: Food and Agriculture Organization of the United Nations.
Chicago Style CitationFAO. Major Soils of the World. Rome: Food and Agriculture Organization of the United Nations, 2002.
Cita MLAFAO. Major Soils of the World. Rome: Food and Agriculture Organization of the United Nations, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.