MLA
Rene_., Studio. Woman at a Horse Racetrack. 1927. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 10. https://digital.library.emory.edu/purl/474cnp5hwm-cor.
APA, 6th edition
Rene_., S. (1927). Woman at a horse racetrack (Box 10) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/474cnp5hwm-cor.
Chicago
Rene_., Studio. “Woman at a Horse Racetrack.” Black-and-white photographs. Robert Langmuir African American Photograph Collection, 1927. Box 10. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/474cnp5hwm-cor.