MLA
Newspaper Clipping of a Photograph of John E. Horbelt's Battery in the Field. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 19, Folder 38. https://digital.library.emory.edu/purl/672b8gtk1d-cor.
APA, 6th edition
Newspaper clipping of a photograph of John E. Horbelt's battery in the field (Box 19, Folder 38). [Clippings (information artifacts)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/672b8gtk1d-cor.
Chicago
“Newspaper Clipping of a Photograph of John E. Horbelt's Battery in the Field.” Clippings (information artifacts). Civil War Collection, n.d. Box 19, Folder 38. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/672b8gtk1d-cor.