MLA
Negro Baptizing, Helena, Ark. [Hand Colored]. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 73. https://digital.library.emory.edu/purl/825x69p8gg-cor.
APA, 6th edition
Negro baptizing, Helena, Ark. [hand colored] (Box 73). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/825x69p8gg-cor.
Chicago
“Negro Baptizing, Helena, Ark. [Hand Colored].” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 73. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/825x69p8gg-cor.