Não informado. (2001). Rubber Statistical Bulletin. International Rubber Study Group.
Chicagoスタイル(17版)引用形式Não informado. Rubber Statistical Bulletin. London: International Rubber Study Group, 2001.
MLA(8版)引用形式Não informado. Rubber Statistical Bulletin. International Rubber Study Group, 2001.
警告: この引用は必ずしも正確ではありません.