Não informado. West Virginia Agriculture and Forestry. University of West Virginia, College of Agriculture and Forestry.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. West Virginia Agriculture and Forestry. Morgantown, Wa. Va: University of West Virginia, College of Agriculture and Forestry.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. West Virginia Agriculture and Forestry. University of West Virginia, College of Agriculture and Forestry.
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