MLA
S. A. Martin Age 8 Months and 6 Days on Oct. 15, 1893. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 61. https://digital.library.emory.edu/purl/1504xgxd4g-cor.
APA, 6th edition
S. A. Martin age 8 months and 6 days on Oct. 15, 1893 (Box 61). [Card photographs (photographs)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/1504xgxd4g-cor.
Chicago
“S. A. Martin Age 8 Months and 6 Days on Oct. 15, 1893.” Card photographs (photographs). Robert Langmuir African American Photograph Collection, n.d. Box 61. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/1504xgxd4g-cor.