First principles

Chicago citation style
Spencer, Herbert, 1820-1903. First principles. 1897 [c1864]. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/006569919. (Accessed November 15, 2018.)
APA citation style
Spencer, Herbert, 1820-1903, (1897 [c1864]) First principles. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/006569919
MLA citation style
Spencer, Herbert, 1820-1903. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/006569919>.
Note: These citations are programmatically generated and may be incomplete.