MLA
Douglas ... An African American woman wearing a long sleeve floor length white dress and a hat. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/409j3tx9bn-cor.
APA, 6th edition
Douglas ... (unknown)[An African American woman wearing a long sleeve floor length white dress and a hat]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/409j3tx9bn-cor.
Chicago
Douglas .., An African American woman wearing a long sleeve floor length white dress and a hat, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/409j3tx9bn-cor.