MLA
Portrait of an African American Young Man Wearing a Hat. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 38. https://digital.library.emory.edu/purl/4579s4mwbw-cor.
APA, 6th edition
Portrait of an African American young man wearing a hat (Box 38). [Card photographs (photographs)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/4579s4mwbw-cor.
Chicago
“Portrait of an African American Young Man Wearing a Hat.” Card photographs (photographs). Robert Langmuir African American Photograph Collection, n.d. Box 38. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/4579s4mwbw-cor.