The different forms of flowers on plants of the same species /

Chicago citation style
Darwin, Charles, 1809-1882. The different forms of flowers on plants of the same species /. 1893. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/008423716. (Accessed December 10, 2018.)
APA citation style
Darwin, Charles, 1809-1882, (1893) The different forms of flowers on plants of the same species /. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/008423716
MLA citation style
Darwin, Charles, 1809-1882. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/008423716>.
Note: These citations are programmatically generated and may be incomplete.