Não informado. (1931). Journal of the Rubber Research Institute of Malaya. Rubber Research Institute of Malaysia.
Chicago Style (17. basım) AtıfNão informado. Journal of the Rubber Research Institute of Malaya. Kuala Lumpur: Rubber Research Institute of Malaysia, 1931.
MLA (8th ed.) AtıfNão informado. Journal of the Rubber Research Institute of Malaya. Rubber Research Institute of Malaysia, 1931.
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