MLA
Ober. African American Policeman with a Baton. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 62. https://digital.library.emory.edu/purl/99351c5b3g-cor.
APA, 6th edition
O. African American policeman with a baton (Box 62) [Card photographs (photographs)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/99351c5b3g-cor.
Chicago
Ober. “African American Policeman with a Baton.” Card photographs (photographs). Robert Langmuir African American Photograph Collection, n.d. Box 62. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/99351c5b3g-cor.