MLA
Arthur L. Macbeth Studio (Baltimore, Md.). African American man sitting on a chair while wearing a suit. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/071ngf1vk0-cor.
APA, 6th edition
Arthur L. Macbeth Studio (Baltimore, Md.). (unknown)[African American man sitting on a chair while wearing a suit]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/071ngf1vk0-cor.
Chicago
Arthur L. Macbeth Studio (Baltimore, Md.), African American man sitting on a chair while wearing a suit, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/071ngf1vk0-cor.