Abraham Lincoln

Chicago citation style
Alexander Gardner, 17 Oct 1821 - 1882. Abraham Lincoln. 1863. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anpg_NPG.83.129&repo=DPLA. (Accessed December 15, 2018.)
APA citation style
Alexander Gardner, 17 Oct 1821 - 1882, (1863) Abraham Lincoln. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anpg_NPG.83.129&repo=DPLA
MLA citation style
Alexander Gardner, 17 Oct 1821 - 1882. Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3Anpg_NPG.83.129&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.