MLA
Gallob. African American Young Man Wearing a Cap and Bottom of Shirt Tied in a Knot Standing with Hands in His Pockets. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 6. https://digital.library.emory.edu/purl/511xd254d6-cor.
APA, 6th edition
G. African American young man wearing a cap and bottom of shirt tied in a knot standing with hands in his pockets (Box 6) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/511xd254d6-cor.
Chicago
Gallob. “African American Young Man Wearing a Cap and Bottom of Shirt Tied in a Knot Standing with Hands in His Pockets.” Black-and-white photographs. Robert Langmuir African American Photograph Collection, n.d. Box 6. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/511xd254d6-cor.