MLA
Gutekunst, Frederick, 1831-1917. Oval portrait of an African American woman sitting.. June 1870. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/40644j0zv1-cor.
APA, 6th edition
Gutekunst, Frederick, 1831-1917. (June 1870)[Oval portrait of an African American woman sitting.]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/40644j0zv1-cor.
Chicago
Gutekunst, Frederick, 1831-1917, Oval portrait of an African American woman sitting., June 1870, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/40644j0zv1-cor.