MLA
Martin Luther King Jr. Memorial, 1968 - Unidentified Figure Speaking during Service. 1968. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 6, Folder 4. https://digital.library.emory.edu/purl/53976hdrv9-cor.
APA, 6th edition
Martin Luther King Jr. memorial, 1968 - Unidentified figure speaking during service (Box 6, Folder 4). (1968). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/53976hdrv9-cor.
Chicago
“Martin Luther King Jr. Memorial, 1968 - Unidentified Figure Speaking during Service.” Black-and-white photographs. Emory University Office of Alumni Publications Photographs, 1968. Box 6, Folder 4. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/53976hdrv9-cor.