FAO. (1998). World soil resources reports N84: World reference base for soil resources. Rome: FAO.
Trích dẫn kiểu ChicagoFAO. World Soil Resources Reports N84: World Reference Base for Soil Resources. Rome: FAO, 1998.
MLA citiranjeFAO. World Soil Resources Reports N84: World Reference Base for Soil Resources. Rome: FAO, 1998.
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