MLA
... Studio. An African American woman in a long dark dress holding an open book. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/122v41ns64-cor.
APA, 6th edition
... Studio. (unknown)[An African American woman in a long dark dress holding an open book]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/122v41ns64-cor.
Chicago
... Studio, An African American woman in a long dark dress holding an open book, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/122v41ns64-cor.