MLA
Negro Slain in Tulsa Riot, June 1-1921 : Man Standing over a Dead African American Man with His Face Covered Lying in a Street after the Tulsa Race Riot. 1921. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 70. https://digital.library.emory.edu/purl/453wstqjt9-cor.
APA, 6th edition
Negro slain in Tulsa riot, June 1-1921 : man standing over a dead African American man with his face covered lying in a street after the Tulsa race riot (Box 70). (1921). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/453wstqjt9-cor.
Chicago
“Negro Slain in Tulsa Riot, June 1-1921 : Man Standing over a Dead African American Man with His Face Covered Lying in a Street after the Tulsa Race Riot.” Photographic postcards. Robert Langmuir African American Photograph Collection, 1921. Box 70. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/453wstqjt9-cor.