MLA
National Art Views Co. (New York, N.Y.). A southern express : old African American man in an ox-drawn cart. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/197xksn05k-cor.
APA, 6th edition
National Art Views Co. (New York, N.Y.). (unknown)[A southern express : old African American man in an ox-drawn cart]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/197xksn05k-cor.
Chicago
National Art Views Co. (New York, N.Y.), A southern express : old African American man in an ox-drawn cart, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/197xksn05k-cor.