MLA
Harper, Marvin H., Jr. Romance Languages - Students Learning at the Foreign Language Laboratory in the Physics Building. 1950. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 12, Folder 9. https://digital.library.emory.edu/purl/3720cfxqc3-cor.
APA, 6th edition
Harper, M. H., Jr. (1950). Romance Languages - Students learning at the Foreign Language Laboratory in the Physics building (Box 12, Folder 9) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/3720cfxqc3-cor.
Chicago
Harper, Marvin H., Jr. “Romance Languages - Students Learning at the Foreign Language Laboratory in the Physics Building.” Black-and-white photographs. EU Office of Alumni Publications Photos Deposit Collection 1, 1950. Box 12, Folder 9. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/3720cfxqc3-cor.