Dyfyniad APA

FAO. (2002). Major soils of the world. Rome: Food and Agriculture Organization of the United Nations.

Dyfyniad Arddull Chicago

FAO. Major Soils of the World. Rome: Food and Agriculture Organization of the United Nations, 2002.

Dyfyniad MLA

FAO. Major Soils of the World. Rome: Food and Agriculture Organization of the United Nations, 2002.

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