MLA
Man Sitting under Tree at Bloody Angle in Spotsylvania. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 16. https://digital.library.emory.edu/purl/56341ns230-cor.
APA, 6th edition
Man sitting under tree at Bloody Angle in Spotsylvania (Box 16). [Card photographs (photographs)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/56341ns230-cor.
Chicago
“Man Sitting under Tree at Bloody Angle in Spotsylvania.” Card photographs (photographs). Robert Langmuir African American Photograph Collection, n.d. Box 16. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/56341ns230-cor.