MLA
A Soldier in Uniform Posing with a Puerto Rican Girl, Peggy, in Culebra, Puerto Rico. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 70. https://digital.library.emory.edu/purl/508hdr7stz-cor.
APA, 6th edition
A soldier in uniform posing with a Puerto Rican girl, Peggy, in Culebra, Puerto Rico (Box 70). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/508hdr7stz-cor.
Chicago
“A Soldier in Uniform Posing with a Puerto Rican Girl, Peggy, in Culebra, Puerto Rico.” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 70. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/508hdr7stz-cor.