FAO. (1991). FAO terminology bulletin; N.20; rev.9: Names of countries. Rome: FAO.
Trích dẫn kiểu ChicagoFAO. FAO Terminology Bulletin; N.20; Rev.9: Names of Countries. Rome: FAO, 1991.
MLA CitationFAO. FAO Terminology Bulletin; N.20; Rev.9: Names of Countries. Rome: FAO, 1991.
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