Não informado. (2008). Occasional Papers in Eastern Botany. Southern Appalachian Botanical Society.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Occasional Papers in Eastern Botany. Morgantown, Wa. Va: Southern Appalachian Botanical Society, 2008.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Occasional Papers in Eastern Botany. Southern Appalachian Botanical Society, 2008.
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