Não informado. (1952). Planters Bulletin. Rubber Research Institute of Malaysia.
Chicagoスタイル(17版)引用形式Não informado. Planters Bulletin. Kuala Lumpur: Rubber Research Institute of Malaysia, 1952.
MLA(8版)引用形式Não informado. Planters Bulletin. Rubber Research Institute of Malaysia, 1952.
警告: この引用は必ずしも正確ではありません.