Não informado. (1965). Rubbers: Rapra abstracts. Rubber and Plastics Research Association of Great Britain.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Rubbers: Rapra Abstracts. Croydon, Inglaterra: Rubber and Plastics Research Association of Great Britain, 1965.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Rubbers: Rapra Abstracts. Rubber and Plastics Research Association of Great Britain, 1965.
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