MLA
Steely, Sarah C. A Portrait of Two Men, One African American, Wearing Suits and Hats, and Have Cigars in Their Mouths. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 65. https://digital.library.emory.edu/purl/409j3tx993-cor.
APA, 6th edition
Steely, S. C. A portrait of two men, one African American, wearing suits and hats, and have cigars in their mouths (Box 65) [Card photographs (photographs)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/409j3tx993-cor.
Chicago
Steely, Sarah C. “A Portrait of Two Men, One African American, Wearing Suits and Hats, and Have Cigars in Their Mouths.” Card photographs (photographs). Robert Langmuir African American Photograph Collection, n.d. Box 65. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/409j3tx993-cor.