Tree in front of the United States National Museum (now the National Museum of Natural History)

Chicago citation style
Gruber, Martin A. Tree in front of the United States National Museum (now the National Museum of Natural History). 1919. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Asiris_arc_291869&repo=DPLA. (Accessed November 18, 2018.)
APA citation style
Gruber, Martin A, (1919) Tree in front of the United States National Museum (now the National Museum of Natural History). Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Asiris_arc_291869&repo=DPLA
MLA citation style
Gruber, Martin A. Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3Asiris_arc_291869&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.