MLA
Unity Mission Church, Home, Training School and Bible Institute Inc. of Phila. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 71. https://digital.library.emory.edu/purl/665h9w0vw5-cor.
APA, 6th edition
Unity Mission Church, Home, Training School and Bible Institute Inc. of Phila. (Box 71). [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/665h9w0vw5-cor.
Chicago
“Unity Mission Church, Home, Training School and Bible Institute Inc. of Phila.” Postcards. Robert Langmuir African American Photograph Collection, n.d. Box 71. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/665h9w0vw5-cor.