Não informado. (1982). Renewable Resources Journal. Renewable Natural Resources Foundation.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Renewable Resources Journal. Bethesda, Md: Renewable Natural Resources Foundation, 1982.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Renewable Resources Journal. Renewable Natural Resources Foundation, 1982.
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