MLA
Unidentified Speakers and Entertainers - Group of Military Officials. 1939. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 7, Folder 1. https://digital.library.emory.edu/purl/965v6wwqkd-cor.
APA, 6th edition
Unidentified Speakers and Entertainers - Group of military officials (Box 7, Folder 1). (1939). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/965v6wwqkd-cor.
Chicago
“Unidentified Speakers and Entertainers - Group of Military Officials.” Black-and-white photographs. Emory University Office of Alumni Publications Photographs, 1939. Box 7, Folder 1. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/965v6wwqkd-cor.