Não informado. (2001). Annual report of the Ohio Agricultural Experiment Station. Ohio Agricultural Experiment Station.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Annual Report of the Ohio Agricultural Experiment Station. Wooster, Ohio: Ohio Agricultural Experiment Station, 2001.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Annual Report of the Ohio Agricultural Experiment Station. Ohio Agricultural Experiment Station, 2001.
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