MLA
Standard Photo Service (Philadelphia, Pa.). African American men posing together. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0859cnp5qq-cor.
APA, 6th edition
Standard Photo Service (Philadelphia, Pa.). (unknown)[African American men posing together]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0859cnp5qq-cor.
Chicago
Standard Photo Service (Philadelphia, Pa.), African American men posing together, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0859cnp5qq-cor.