MLA
Hugh C. Leighton Co. (Portland, Me.). An African American man eating watermelon [hand colored]. August 16, 1903. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/822h70rz0j-cor.
APA, 6th edition
Hugh C. Leighton Co. (Portland, Me.). (August 16, 1903)[An African American man eating watermelon [hand colored]]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/822h70rz0j-cor.
Chicago
Hugh C. Leighton Co. (Portland, Me.), An African American man eating watermelon [hand colored], August 16, 1903, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/822h70rz0j-cor.