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Ohio Perennial and Biennial Weed Guide. (n.d.). Retrieved June 14, 2015, from http://www.oardc.ohio-state.edu/weedguide/singlerecord.asp?id=160
Peterson, R. (1984). Roger Tory Peterson field guides (50th anniversary ed.). Norwalk, Conn.: Easton Press.
Slender Rush. (n.d.). Retrieved June 14, 2015, from http://blueberries.msu.edu/uploads/files/Slender rush.pdf
Symonds, G. (1958). The tree identification book: A new method for the practical identification and recognition of trees. New York: M. Barrows.
Uva, R., & Neal, J. (1997). Weeds of the Northeast. Ithaca: Comstock Pub. Associates.