MLA
Homer, Winslow, 1836-1910. An African American man on a beach, with a sea turtle. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/68605qftxv-cor.
APA, 6th edition
Homer, Winslow, 1836-1910. (unknown)[An African American man on a beach, with a sea turtle]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/68605qftxv-cor.
Chicago
Homer, Winslow, 1836-1910, An African American man on a beach, with a sea turtle, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/68605qftxv-cor.