James D. Hart and and Phillip W. Leininger. "Stevens, Benjamin Franklin (1833–1902) and Henry Stevens (1819–86)." The Oxford Companion to American Literature. Oxford University Press. 1995. Encyclopedia.com. 24 Dec. 2009 <http://www.encyclopedia.com>.
James D. Hart and and Phillip W. Leininger. "Stevens, Benjamin Franklin (1833–1902) and Henry Stevens (1819–86)." The Oxford Companion to American Literature. Oxford University Press. 1995. Encyclopedia.com. (December 24, 2009). http://www.encyclopedia.com/doc/1O123-StvnsBnjmnFrnkln18331902n.html
James D. Hart and and Phillip W. Leininger. "Stevens, Benjamin Franklin (1833–1902) and Henry Stevens (1819–86)." The Oxford Companion to American Literature. Oxford University Press. 1995. Retrieved December 24, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O123-StvnsBnjmnFrnkln18331902n.html