MLA
Brown. Philadelphia Bible Class. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 56. https://digital.library.emory.edu/purl/296wwpzgs4-cor.
APA, 6th edition
B. Philadelphia Bible class (Box 56) [Card photographs (photographs)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/296wwpzgs4-cor.
Chicago
Brown. “Philadelphia Bible Class.” Card photographs (photographs). Robert Langmuir African American Photograph Collection, n.d. Box 56. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/296wwpzgs4-cor.