MLA
An African American Man Wearing a Suit and Hat, Carrying a Cane, Seated on the Arm of a Chair. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 51. https://digital.library.emory.edu/purl/252j6q5788-cor.
APA, 6th edition
An African American man wearing a suit and hat, carrying a cane, seated on the arm of a chair (Box 51). [Card photographs (photographs)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/252j6q5788-cor.
Chicago
“An African American Man Wearing a Suit and Hat, Carrying a Cane, Seated on the Arm of a Chair.” Card photographs (photographs). Robert Langmuir African American Photograph Collection, n.d. Box 51. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/252j6q5788-cor.