MLA
Commencement, Pre-1940 - Graduation Procession, Guests Look On. 1930. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 4, Folder 1. https://digital.library.emory.edu/purl/037hqbzm25-cor.
APA, 6th edition
Commencement, pre-1940 - Graduation procession, guests look on (Box 4, Folder 1). (1930). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/037hqbzm25-cor.
Chicago
“Commencement, Pre-1940 - Graduation Procession, Guests Look On.” Black-and-white photographs. Emory University Office of Alumni Publications Photographs, 1930. Box 4, Folder 1. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/037hqbzm25-cor.