MLA
Ex. Sup. Co. (Chicago, Ill.). Sam Langford in Boston, Mass. : an African American boxer. 1921 approx.. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/610wpzgmwf-cor.
APA, 6th edition
Ex. Sup. Co. (Chicago, Ill.). (1921 approx.)[Sam Langford in Boston, Mass. : an African American boxer]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/610wpzgmwf-cor.
Chicago
Ex. Sup. Co. (Chicago, Ill.), Sam Langford in Boston, Mass. : an African American boxer, 1921 approx., Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/610wpzgmwf-cor.