Não informado. Oil Palm News. Tropical Products Institute, Oil Palm Advisory Bureau.
Chicagoスタイル(17版)引用形式Não informado. Oil Palm News. London: Tropical Products Institute, Oil Palm Advisory Bureau.
MLA(8版)引用形式Não informado. Oil Palm News. Tropical Products Institute, Oil Palm Advisory Bureau.
警告: この引用は必ずしも正確ではありません.