MLA
Mark, J. Enjoying Florida Water Melons. 1911. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 69. https://digital.library.emory.edu/purl/552w3r22cf-cor.
APA, 6th edition
Mark, J. (1911). Enjoying Florida water melons (Box 69) [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/552w3r22cf-cor.
Chicago
Mark, J. “Enjoying Florida Water Melons.” Postcards. Robert Langmuir African American Photograph Collection, 1911. Box 69. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/552w3r22cf-cor.