Large group, probably students, sitting on steps, location unknown, n.d

Chicago citation style
Large group, probably students, sitting on steps, location unknown, n.d. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/jhp/id/2346. (Accessed October 15, 2018.)
APA citation style
Large group, probably students, sitting on steps, location unknown, n.d. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/jhp/id/2346
MLA citation style
Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/jhp/id/2346>.
Note: These citations are programmatically generated and may be incomplete.