Herbert Hoover

Chicago citation style
John Doctoroff, 1893 - 1970. Herbert Hoover. 1928. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anpg_NPG.79.227&repo=DPLA. (Accessed December 16, 2018.)
APA citation style
John Doctoroff, 1893 - 1970, (1928) Herbert Hoover. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anpg_NPG.79.227&repo=DPLA
MLA citation style
John Doctoroff, 1893 - 1970. Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3Anpg_NPG.79.227&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.