Não informado. (1888). Bulletin of the Ohio Agricultural Experiment Station. Ohio Agricultural Experiment Station.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Bulletin of the Ohio Agricultural Experiment Station. Wooster, Ohio: Ohio Agricultural Experiment Station, 1888.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Bulletin of the Ohio Agricultural Experiment Station. Ohio Agricultural Experiment Station, 1888.
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