MLA
Duval News Company (Jacksonville, Fla.). Old slave market, St. Augustine, Fla.. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/119f4qrfkz-cor.
APA, 6th edition
Duval News Company (Jacksonville, Fla.). (unknown)[Old slave market, St. Augustine, Fla.]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/119f4qrfkz-cor.
Chicago
Duval News Company (Jacksonville, Fla.), Old slave market, St. Augustine, Fla., unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/119f4qrfkz-cor.