MLA
Dr. John H. McCombe and Brown Metropolitan Jubilee Singers. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 70. https://digital.library.emory.edu/purl/402q573n96-cor.
APA, 6th edition
Dr. John H. McCombe and Brown Metropolitan Jubilee Singers (Box 70). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/402q573n96-cor.
Chicago
“Dr. John H. McCombe and Brown Metropolitan Jubilee Singers.” 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/402q573n96-cor.