Não informado. (1913). Journal of the American Society of Agronomy. American Society of Agronomy.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Journal of the American Society of Agronomy. Washington: American Society of Agronomy, 1913.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Journal of the American Society of Agronomy. American Society of Agronomy, 1913.
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