MLA
Buber, A. Spharr. S. Wiggins in Porter Uniform Leaning on a Chair. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 31. https://digital.library.emory.edu/purl/24298sf7r5-cor.
APA, 6th edition
Buber, A. S. S. Wiggins in porter uniform leaning on a chair (Box 31) [Card photographs (photographs)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/24298sf7r5-cor.
Chicago
Buber, A. Spharr. “S. Wiggins in Porter Uniform Leaning on a Chair.” Card photographs (photographs). Robert Langmuir African American Photograph Collection, n.d. Box 31. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/24298sf7r5-cor.