MLA
An African American Man in a Suit Seated in a Chair with Two Other Men Seated in Chairs in Suits in Front of a Black America Sign. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 32. https://digital.library.emory.edu/purl/716pzgmsgq-cor.
APA, 6th edition
An African American man in a suit seated in a chair with two other men seated in chairs in suits in front of a Black America sign (Box 32). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/716pzgmsgq-cor.
Chicago
“An African American Man in a Suit Seated in a Chair with Two Other Men Seated in Chairs in Suits in Front of a Black America Sign.” Black-and-white photographs. Robert Langmuir African American Photograph Collection, n.d. Box 32. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/716pzgmsgq-cor.