Não informado. (1964). Philippine Journal of Plant Industry. U.S. Department of Agriculture, Bureau of Plant Industry.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Philippine Journal of Plant Industry. Manila: U.S. Department of Agriculture, Bureau of Plant Industry, 1964.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Philippine Journal of Plant Industry. U.S. Department of Agriculture, Bureau of Plant Industry, 1964.
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