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Langdon, Keith R.. "Dragonflies and Damselflies of the Smokies." Southeastern Biology 53, no. 2 (2006): 180.
White, Peter S., Tom Condon, Janet H. Rock, Carol Ann McCormick, Pat Beaty, and Keith R. Langdon. Wildflowers of the Smokies. Gatlingburg, TN: Great Smoky Mountains Natural History Association, 1996.