MLA
Violet Studio (Louisville, Ky.). Portrait of an African American man with a pocket watch leaning on a chair. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/467jq2bvsp-cor.
APA, 6th edition
Violet Studio (Louisville, Ky.). (unknown)[Portrait of an African American man with a pocket watch leaning on a chair]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/467jq2bvsp-cor.
Chicago
Violet Studio (Louisville, Ky.), Portrait of an African American man with a pocket watch leaning on a chair, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/467jq2bvsp-cor.