Não informado. (2008). Occasional Papers in Eastern Botany. Southern Appalachian Botanical Society.
Chicago-referens (17:e uppl.)Não informado. Occasional Papers in Eastern Botany. Morgantown, Wa. Va: Southern Appalachian Botanical Society, 2008.
MLA-referens (8:e uppl.)Não informado. Occasional Papers in Eastern Botany. Southern Appalachian Botanical Society, 2008.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.